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CN-122020907-A - Continuous material reinforced structure design method and system for hardware steel sheet product

CN122020907ACN 122020907 ACN122020907 ACN 122020907ACN-122020907-A

Abstract

The invention relates to the technical field of hardware production and processing, and provides a method and a system for designing a continuous material reinforced structure of a hardware steel sheet product, wherein the method comprises the steps of identifying a core bearing area and a key load working condition of a continuous material structure corresponding to the hardware steel sheet product under a mechanical state evolution trend; the method comprises the steps of calculating a stress concentration coefficient and a fatigue damage threshold value of a core bearing area under a key load working condition to determine a target strength value required by the core bearing area, constructing a gradient strength distribution map of a connecting structure under the key load working condition according to the target strength value, defining a corresponding reinforcing topological configuration of the connecting structure in the core bearing area, determining variable cross-section distribution characteristics of the connecting structure, combining the gradient strength distribution map and the reinforcing topological configuration, and outputting a connecting structure reinforcing scheme of a hardware steel sheet product. The invention can ensure the balance between the bearing performance and manufacturability of the connecting structure, and effectively avoid the problems of local fracture and instability.

Inventors

  • YUE SONG

Assignees

  • 东莞市锐扬精密五金塑胶有限公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (10)

  1. 1. The utility model provides a continuous material reinforcing structure design method for hardware steel sheet products, which is characterized in that the method comprises the following steps: Stress distribution data of the hardware steel sheet product in a multi-station continuous stamping process is obtained, so that the mechanical state evolution trend of the hardware steel sheet product in a stamping process is analyzed, and a core bearing area and a key load working condition of a connecting structure corresponding to the hardware steel sheet product under the mechanical state evolution trend are identified; Calculating a stress concentration coefficient and a fatigue damage threshold value of the core bearing area under the key load working condition to determine a target strength value required by the core bearing area, and constructing a gradient strength distribution map of the connecting structure under the key load working condition according to the target strength value; Based on the gradient strength distribution map, defining an enhanced topological configuration corresponding to the connecting structure in the core bearing area, and analyzing stress gradient distribution characteristics and load spectrum characteristics in the mechanical state evolution trend to determine variable cross-section distribution characteristics of the connecting structure; and fusing the reinforced topological configuration, the variable cross-section distribution characteristics and the gradient strength distribution map, and outputting a continuous material structure reinforcing scheme of the hardware steel sheet product.
  2. 2. The method for designing a continuous material reinforced structure for a hardware steel sheet product according to claim 1, wherein constructing a gradient intensity distribution map of the continuous material structure under the key load working condition according to the target intensity value comprises: Performing space discretization on the geometric model of the connecting structure to obtain a finite element grid; Distributing the target intensity value to a corresponding node in the finite element grid as a node intensity reference value; positioning a remaining area except a core bearing area corresponding to the target intensity value, and calculating a required intensity value corresponding to each node of the remaining area based on the node intensity reference value; fusing the node strength reference value and the required strength value to obtain a complete node strength data set; And performing visual rendering on the complete node intensity dataset to obtain the gradient intensity distribution map.
  3. 3. The method for designing a continuous material reinforced structure for a hardware steel sheet product according to claim 2, wherein calculating the required strength value corresponding to each node in the remaining area based on the node strength reference value comprises: identifying a spatial topological relationship between the remaining region and the core carrying region; Analyzing the stress transfer rule of the residual area under the key load working condition; And transmitting the node strength reference value from each node of the core bearing area to each node of the residual area based on the space topological relation and the stress transmission rule, and obtaining a required strength value corresponding to each node of the residual area.
  4. 4. The method for designing a joint material reinforced structure for a hardware steel sheet product according to claim 1, wherein defining the reinforced topological configuration of the joint material structure corresponding to the core bearing area based on the gradient intensity distribution map comprises: Converting the intensity requirement values of all positions of the core bearing region in the gradient intensity distribution map into material relative density target values of corresponding positions; identifying a target material distribution morphology within the core bearing region based on the material relative density target value; according to the distribution form of the target material, extracting a communication region with the material density higher than a preset threshold value in the core bearing region, and generating a three-dimensional entity model corresponding to the communication region; and defining an enhanced topological configuration corresponding to the connecting structure in the core bearing area based on the three-dimensional entity model.
  5. 5. The method for designing a continuous material reinforcing structure for a metal steel sheet product according to claim 4, wherein converting the strength requirement values of each position of the core bearing region in the gradient strength distribution map into the material relative density target values of the corresponding positions comprises: Obtaining the reference yield strength of the material used by the connecting structure; Calculating the ratio between the strength requirement value and the reference yield strength to obtain the strength requirement ratio of the corresponding position; And converting the strength demand ratio into the material relative density target value through a preset mapping relation.
  6. 6. The method for designing a continuous material reinforced structure for a hardware steel sheet product according to claim 1, wherein analyzing the stress gradient distribution characteristic and the load spectrum characteristic in the mechanical state evolution trend to determine the variable cross-section distribution characteristic of the continuous material structure comprises: according to the stress gradient distribution characteristics, a main bearing path in the connecting structure is identified; extracting key load circulation parameters corresponding to the main bearing path from the load spectrum characteristics, wherein the key load circulation parameters comprise peak load and load circulation amplitude; Analyzing a section moment of inertia change track of the connecting structure based on the main bearing path and the key load circulation parameter; and extracting the variable cross-section distribution characteristics of the connecting structure from the cross-section moment of inertia change track.
  7. 7. The method for designing a continuous material reinforced structure of a hardware steel sheet product according to claim 1, wherein identifying a core bearing area and a key load condition of a continuous material structure corresponding to the hardware steel sheet product under the mechanical state evolution trend comprises: acquiring stress distribution time sequence data of the connecting structure under the dynamic state evolution trend; based on the stress distribution time sequence data, calculating a fatigue damage accumulated value and a maximum main stress peak value of each region of the connecting structure; When the fatigue damage accumulated value of the region exceeds a preset damage tolerance threshold value and the maximum main stress peak value of the region exceeds a preset material allowable stress threshold value, judging the region as the core bearing region; And identifying the stamping procedure step corresponding to the core bearing area reaching the maximum main stress peak value, and taking the stamping procedure step as the key load working condition.
  8. 8. The method for designing a joint material reinforced structure for a hardware steel sheet product according to claim 7, wherein calculating the fatigue damage accumulation value and the maximum principal stress peak value of each region of the joint material structure based on the stress distribution time sequence data comprises: extracting historical cyclic stress corresponding to each region of the connecting structure in the whole stamping process from the stress distribution time sequence data; Calculating a fatigue damage accumulated value of each region of the connecting structure based on the historical cyclic stress; and determining all main stress extremum of each region of the connecting structure in all stamping processes according to the stress distribution time sequence data, and defining the maximum value of the main stress extremum as the maximum main stress peak value.
  9. 9. The method for designing a continuous material reinforced structure for a metal steel sheet product according to claim 1, wherein calculating the stress concentration coefficient of the core bearing area under the critical load condition comprises: obtaining a local maximum stress value of the core bearing area under a key load working condition; calculating a corresponding reference stress value of the core bearing area under the same load condition; And calculating the stress concentration coefficient of the core bearing area under the key load working condition based on the local maximum stress value and the reference stress value.
  10. 10. A continuous material reinforced structural design system for a hardware steel sheet product, the system comprising: The state sensing module is used for acquiring stress distribution data of the hardware steel sheet product in a multi-station continuous stamping process so as to analyze the mechanical state evolution trend of the hardware steel sheet product in a stamping process and identify a core bearing area and a key load working condition of a material connecting structure corresponding to the hardware steel sheet product under the mechanical state evolution trend; The intensity quantization module is used for calculating a stress concentration coefficient and a fatigue damage threshold value of the core bearing area under the key load working condition so as to determine a target intensity value required by the core bearing area, and constructing a gradient intensity distribution map of the connecting structure under the key load working condition according to the target intensity value; The configuration generation module is used for defining the corresponding enhanced topological configuration of the connecting structure in the core bearing area based on the gradient intensity distribution map, and analyzing the stress gradient distribution characteristics and the load spectrum characteristics in the mechanical state evolution trend to determine the variable cross-section distribution characteristics of the connecting structure; and the scheme output module is used for fusing the reinforced topological configuration, the variable cross-section distribution characteristics and the gradient intensity distribution map and outputting a continuous material structure reinforced scheme of the hardware steel sheet product.

Description

Continuous material reinforced structure design method and system for hardware steel sheet product Technical Field The invention relates to a continuous material reinforced structure design method and system for hardware steel sheet products, and belongs to the technical field of hardware production and processing. Background Along with the promotion of industrial automation level and the upgrading of precision manufacturing demand, hardware steel sheet wide application in a plurality of fields such as electronic equipment, automobile parts, mechanical equipment, reliable even material structure not only guarantee steel sheet machining precision, promotes production efficiency's core, more directly concern the structural stability and the life of finished product. At present, the design of the continuous material structure of the hardware steel sheet product mostly adopts fixed design aiming at a single product model, and the design is one-time empirical design according to the final shape of the hardware steel sheet product to form a continuous material structure permanently bound with a die. Disclosure of Invention The invention provides a design method and a system for a connecting material reinforced structure of a hardware steel sheet product, which mainly aim to ensure the balance between the bearing performance and manufacturability of the connecting material structure and effectively avoid the problems of local fracture and instability. In order to achieve the above purpose, the invention provides a method for designing a continuous material reinforced structure for a hardware steel sheet product, which comprises the following steps: Stress distribution data of the hardware steel sheet product in a multi-station continuous stamping process is obtained, so that the mechanical state evolution trend of the hardware steel sheet product in a stamping process is analyzed, and a core bearing area and a key load working condition of a connecting structure corresponding to the hardware steel sheet product under the mechanical state evolution trend are identified; Calculating a stress concentration coefficient and a fatigue damage threshold value of the core bearing area under the key load working condition to determine a target strength value required by the core bearing area, and constructing a gradient strength distribution map of the connecting structure under the key load working condition according to the target strength value; Based on the gradient strength distribution map, defining an enhanced topological configuration corresponding to the connecting structure in the core bearing area, and analyzing stress gradient distribution characteristics and load spectrum characteristics in the mechanical state evolution trend to determine variable cross-section distribution characteristics of the connecting structure; and fusing the reinforced topological configuration, the variable cross-section distribution characteristics and the gradient strength distribution map, and outputting a continuous material structure reinforcing scheme of the hardware steel sheet product. Optionally, constructing a gradient intensity distribution map of the continuous material structure under the key load working condition according to the target intensity value, including: Performing space discretization on the geometric model of the connecting structure to obtain a finite element grid; Distributing the target intensity value to a corresponding node in the finite element grid as a node intensity reference value; positioning a remaining area except a core bearing area corresponding to the target intensity value, and calculating a required intensity value corresponding to each node of the remaining area based on the node intensity reference value; fusing the node strength reference value and the required strength value to obtain a complete node strength data set; And performing visual rendering on the complete node intensity dataset to obtain the gradient intensity distribution map. Optionally, calculating, based on the node strength reference value, a required strength value corresponding to each node in the remaining area includes: identifying a spatial topological relationship between the remaining region and the core carrying region; Analyzing the stress transfer rule of the residual area under the key load working condition; And transmitting the node strength reference value from each node of the core bearing area to each node of the residual area based on the space topological relation and the stress transmission rule, and obtaining a required strength value corresponding to each node of the residual area. Optionally, defining an enhanced topological configuration of the link structure corresponding to the core bearing region based on the gradient intensity distribution map, including: Converting the intensity requirement values of all positions of the core bearing region in the gradient intensity distribution map into mater