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Finite element modeling method for modal simulation

A modeling method and finite element technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as heavy repetitive workload, error-prone, and distortion of modal simulation results, so as to improve quality and reduce Errors, the effect of optimizing the execution process

Inactive Publication Date: 2011-10-19
YANFENG AUTOMOTIVE TRIM SYST CO LTD
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Problems solved by technology

The accuracy of the simulation depends on the accuracy of the model. The automotive interior is a relatively complex system. In the process of building the model, there are often errors in material parameters, thickness information, and internal connections. These errors may cause the final modal simulation Distortion of results
On the other hand, the establishment of simulation models is realized by using commercial software such as Altair HyperMesh and ANSA. Relying on its original functions often results in low efficiency of simulation model establishment, such as defining thickness, defining connections, etc. can only be done manually, which is not only error-prone, but also has a huge amount of repetitive work

Method used

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  • Finite element modeling method for modal simulation

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Embodiment Construction

[0022] The following is based on Figure 1-7 , give a preferred embodiment of the present invention, and give a detailed description, so that the functions and characteristics of the present invention can be better understood.

[0023] The flowchart of the finite element modeling method for modal simulation of the present invention is as figure 1 As shown, the calling interface is as follows figure 2 shown.

[0024] Based on the Altair HyperWorks software architecture and TCL / TK programming language, construct six functional modules that are executed sequentially, namely: import grid model module 1, check grid model module 2, establish connection module 3, establish attribute and material card module 4 . Establishing the modal calculation working condition module 5 , and exporting the grid model module 6 .

[0025] click figure 2 The "Import Model" button shown is to import the grid model module 1 to select the path and file of the grid model of the object to be analyzed...

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Abstract

The invention discloses a finite element modeling method for modal simulation, which comprises the following steps of: importing a grid model of an object to be analyzed; checking the integrity of the grid model; establishing connection between components; establishing attribute cards and material cards of the components; establishing modal calculation conditions; and exporting the grid model processed by the steps. By the method, analysts, engineers, and even people who do not know the finite element modeling method can quickly establish an analysis model to calculate and check results, the quality of the analysis model is improved, and errors are reduced.

Description

technical field [0001] The invention relates to the technical fields of computer-aided engineering and software, in particular to a finite element modeling method for modal simulation of automobile interior decoration. Background technique [0002] The natural frequency of the automotive interior is its inherent characteristic, and its level has an important impact on the NVH performance of the vehicle, not only affecting the vibration durability of the interior, but also has a greater impact on the noise control of the vehicle. In the process of automotive interior development, computer simulation is often used to solve the natural frequency of the automotive interior, which is the so-called modal simulation. [0003] During modal simulation, we not only focus on the accuracy of the simulation, but also the efficiency of the simulation. The accuracy of the simulation depends on the accuracy of the model. The automotive interior is a relatively complex system. In the proces...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 郭庆刘兵韩鑫
Owner YANFENG AUTOMOTIVE TRIM SYST CO LTD
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