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Accurate modeling method for metal material welding spots

A technology of metal materials and modeling methods, applied in the field of vehicle simulation analysis, which can solve the problems of difficult simulation accuracy of solder joints

Active Publication Date: 2021-03-09
FAW CAR CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, there is no clear process and method for the research on the simulation of solder joint failure in collision. It is mainly based on the assignment of engineering experience. It is difficult to guarantee the simulation accuracy of solder joints in collision, and there is also a certain blindness in debugging.

Method used

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  • Accurate modeling method for metal material welding spots
  • Accurate modeling method for metal material welding spots
  • Accurate modeling method for metal material welding spots

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Embodiment Construction

[0025] The specific embodiment of the present invention is to provide an accurate modeling method of metal material solder joints. Since the solder joints are an important component of connecting sheet metal parts, with the deformation of the sheet metal parts during the collision, the solder joints are not subjected to a single load, but a compound load. The force-based solder joint failure judgment needs to decompose the composite stress mode of a single solder joint into tensile force, shear force, peeling bending moment, and plane torque, and conduct simulation analysis and benchmarking respectively. Such as Figure 6 As shown, the precise modeling method of metal material solder joint of the present invention comprises the following steps:

[0026] Step 1: Make lap tensile test, butt joint tensile test and cross tensile test samples with metal materials, measure the thickness of the base metal, the size and position of the solder joints, and obtain different working cond...

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Abstract

The invention provides an accurate modeling method for metal material welding spots, and belongs to the technical field of vehicle simulation analysis. The method comprises the steps: by comparing theforce and displacement curve of the actual welding spot sample piece with the force and displacement curve of the CAE analogue simulation, adjusting the parameters of the analogue simulation, so thecurve output by the analogue simulation is unified with the corresponding test curve, the welding spot material parameter model is obtained and used in the whole vehicle analogue analysis model, and the accuracy and precision of the analogue analysis result are improved.

Description

technical field [0001] The invention relates to the technical field of vehicle simulation analysis, in particular to an accurate modeling method for solder joints of metal materials. Background technique [0002] In the process of vehicle development, the performance of welding points has a significant impact on the performance of the vehicle. During the simulation analysis process of vehicle structural crashworthiness development, it is necessary to input the mechanical performance parameters of different solder joints, and to improve the simulation accuracy, the parameters need to be benchmarked. The accuracy of benchmarking directly determines the accuracy and precision of simulation analysis results. At present, there is no clear process and method for the research on the simulation of solder joint failure in collision. It is mainly based on the assignment of engineering experience. It is difficult to guarantee the simulation accuracy of solder joints in collision, and ...

Claims

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Application Information

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IPC IPC(8): G06F30/17G06F30/15G06F30/20G06F119/14G06F119/02
CPCG06F30/17G06F30/15G06F30/20G06F2119/14G06F2119/02
Inventor 刘月杰赵彦超王小龙穆光毕思刚王建勋
Owner FAW CAR CO LTD
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