CN-122020795-A - BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method

Abstract

The invention relates to the technical field of digital protection and numerical simulation of ancient building wood structures, and discloses a BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method, which comprises the steps of firstly extracting ACIS format geometric files of a mortise and tenon joint BIM model from a Revit platform, and obtaining unit and node information through HYPERMESH grid division; and through an integrated structure analysis plug-in, complete node/unit set, material performance, reference points, amplitude curves, constraint, interaction, analysis steps and full-flow parameter configuration of boundary conditions are completed, an INP file containing complete Abaqus pretreatment information is automatically generated, and the rotation performance analysis can be carried out by importing Abaqus. The method realizes the efficient coordination of BIM and Abaqus, adapts to multiple types of mortise and tenon joints, improves simulation precision and efficiency, and provides scientific basis for the protection of the wooden structure of the ancient building.

Inventors

• XIE QIFANG
• WANG RUI
• LIU LEI

Assignees

• 东北林业大学

Dates

Publication Date

20260512

Application Date

20260203

Claims (10)

1. 1. BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method is characterized by comprising the following steps: Acquiring a built mortise and tenon joint BIM model based on a Revit platform, and extracting an ACIS format geometric file of the BIM model; importing HYPERMESH the ACIS format geometric file into software for grid division to obtain unit information and node information of a finite element model; loading XBIM an open source library, analyzing the component topological relation of the BIM based on an IFC standard, and establishing a mapping relation between the finite element grid information and the BIM component to generate an enhanced BIM with finite element grid characteristics; calling an integrated structure analysis plug-in based on Revit API and XBIM open source library development, and configuring structure analysis parameters on the basis of the enhanced BIM model, wherein the structure analysis parameters comprise node/unit set definition, surface definition, reference point setting, material performance, section characteristics, local coordinate system setting, amplitude curve configuration, constraint setting, interaction definition, interaction attribute definition, analysis step configuration and boundary condition setting; The integrated structure analysis plug-in automatically integrates grid data in an initial INP file and structural analysis parameters configured in the fourth step based on the mapping relation to generate an Abaqus INP file which comprises complete geometry, grids, materials, cross sections, interaction, load and analysis step configuration and can be directly executed; And importing the Abaqus INP file into Abaqus software, performing numerical simulation analysis on the rotation performance of the mortise and tenon joint, and completing simulation modeling and rotation analysis.
2. 2. The BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method according to claim 1, wherein the node/unit set definition and surface definition specifically comprises: Defining a set of consecutive nodes/units to identify a component body; Automatically identifying and defining a discontinuous node/unit set based on geometric engagement boundaries of the tenons and mortise openings to accurately locate potential contact areas; automatically generating a slave surface and a master surface for defining contact pairs based on the discontinuous set; the definition of the node/element set supports manual entry of node/element number supplements or automatic identification of pick-up data by parsing Elset/Nset identities in the initial INP file.
3. 3. The BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method according to claim 1, wherein the material performance configuration comprises defining the elastic performance and the plastic performance of the material; The cross-sectional property configuration includes imparting the material properties to the structural member cross-section and assigning the defined cross-section to the corresponding structural member.
4. 4. The BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method according to claim 1 is characterized in that the reference point setting supports accurate setting by inputting three-dimensional coordinates as datum points defined by load application and constraint, and the local coordinate system is used for specifying the material direction of a structural member.
5. 5. The BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method according to claim 1, wherein the amplitude curve is configured to define a load-time or displacement-time correlation numerical sequence conforming to a pseudo-static test loading system of the historic building wood structure.
6. 6. The BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method according to claim 1 is characterized in that constraint types provided by constraint setting comprise binding, rigid bodies, coupling and display bodies, and the constraint batch application is realized through the association of reference points or node sets.
7. 7. The BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method according to claim 1, wherein the interaction definition and interaction attribute definition specifically comprises: based on the generated slave surface and the master surface, a contact pair for simulating friction contact and engagement behavior of the mortise and tenon joint is configured; based on wood property test data, configuring friction coefficient, normal behavior and tangential behavior parameters of a contact interface for the contact pair; The tangential behavior parameters support the configuration of elastic-plastic contact behaviors and adapt to the plastic deformation simulation after the mortise and tenon joint is meshed.
8. 8. The BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method according to claim 1, wherein the analysis step configuration supports static general analysis steps and dynamic explicit analysis steps, geometric nonlinear options can be started, and initial increment step, minimum increment step and maximum increment step parameters are configured.
9. 9. The BIM-based ABAQUS simulation modeling and rotation analysis method of mortise nodes according to claim 1, wherein the boundary conditions are set to correlate node sets with magnitude curve data, define hinge, ground or displacement loading constraints, and support activation or deactivation of specific boundary conditions in different analysis steps.
10. 10. The BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method is characterized in that the Abaqus INP file completely contains geometric topology information, finite element grid information, material attribute information, section attribute information, interaction configuration information, load configuration information, boundary condition information and analysis step configuration information, and is adaptive to rotation performance simulation analysis of various mortise and tenon types.

Description

BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method Technical Field The invention relates to the technical field of digital protection and numerical simulation of historic building wood structures, in particular to a BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method. Background Along with the improvement of the requirements of the preventive protection of the wooden structure of the ancient building on the safety performance, the digital technology needs to meet the dual requirements of visual modeling and mechanical analysis, so that the visual reconstruction and digital archiving of the geometric information of the wooden structure of the ancient building are realized, and the fine analysis of the mechanical behavior is supported. The mortise and tenon joint is used as a core unit of force transmission-energy consumption of the wooden structure of the ancient building, and the rotation performance of the mortise and tenon joint directly influences the stability, the anti-seismic performance and the durability of the whole structure. At present, BIM technology, especially a platform represented by Revit, has become a preferred tool for digital modeling of mortise and tenon joints by virtue of the parametric modeling and information integration capabilities of the platform. Abaqus also uses the powerful nonlinear numerical simulation capability to calculate the mechanical properties of key parts such as mortise and tenon joints. However, the prior art cannot meet the special cooperative requirements of the two in mortise and tenon joint rotation performance calculation, and the following key bottlenecks exist: The BIM model has the limitations in structural analysis that Revit is used as mainstream BIM software, has strong three-dimensional parametric modeling capability, can quickly construct a mortise and tenon joint model, but lacks a professional structural analysis function, cannot be directly used for rotation performance simulation, and if mechanical analysis is required, a user needs to re-create the model in finite element software to set a large number of repeated pretreatment parameters, so that the workload is high and errors are easy to occur; ABAQUS pretreatment modeling is complicated, and although the advantages of ABAQUS are remarkable in nonlinear analysis and complex mechanical simulation, the modeling process is complex and time-consuming, and particularly for mortise and tenon joints with complex shapes, the efficiency is lower. The data conversion and mapping are difficult, and in the prior art, information islands exist in data interaction between Revit and ABAQUS. Although some preliminary data export tools exist, the special data mapping mechanism aiming at the rotation performance of the mortise and tenon joint is lacked, so that the related key data of the rotation performance is easy to lose, the analysis precision is reduced, if repeated modeling is selected in different platforms to ensure the model precision, the time and cost are high, and the practical value of the digital technology is seriously weakened. In summary, the prior art cannot efficiently and accurately realize closed loop of Revit modeling, data conversion and ABAQUS rotation performance calculation, and a set of special numerical calculation methods are needed to be developed, so that data barriers are opened, rotation performance targeted configuration is enhanced, and calculation efficiency and precision are improved. Disclosure of Invention In view of the above, the invention provides a BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method, which aims to solve the problems of complex data interaction barriers, repeated modeling and insufficient special suitability of Revit BIM model and Abaqus software in mortise and tenon joint rotation performance analysis in the prior art. The invention provides a BIM-based mortise and tenon joint ABAQUS simulation modeling and rotation analysis method, which comprises the following steps of: Acquiring a built mortise and tenon joint BIM model based on a Revit platform, and extracting an ACIS format geometric file of the BIM model; importing HYPERMESH the ACIS format geometric file into software for grid division to obtain unit information and node information of a finite element model; loading XBIM an open source library, analyzing the component topological relation of the BIM based on an IFC standard, and establishing a mapping relation between the finite element grid information and the BIM component to generate an enhanced BIM with finite element grid characteristics; calling an integrated structure analysis plug-in based on Revit API and XBIM open source library development, and configuring structure analysis parameters on the basis of the enhanced BIM model, wherein the structure analysis parameters comprise node/unit set definition, surface definition,