Weld joint fatigue calculation method
A calculation method and fatigue technology, applied in the field of weld fatigue calculation, can solve problems such as low simulation accuracy, singleness, and poor simulation effect, and achieve the effect of improving simulation effect and simulation accuracy
Active Publication Date: 2019-07-26
JIANGLING MOTORS
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[0004]
The existing weld fatigue calculation method only uses a single finite element model, which has some points with poor simulation effect and low simulation accuracy
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[0051] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. Several embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.
[0052] see figure 1 , the first embodiment of the present invention proposes a welding seam fatigue calculation method, which is applied to an automobile suspension system, comprising the following steps:
[0053] S1. According to the parameter and three-dimensional model of the automobile suspension system, the suspension multi-body dynamics model is established based on Adams.
[0054] Specifically, the parameter...
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The invention discloses a weld joint fatigue calculation method which is applied to an automotive suspension system and comprises the following steps: establishing a suspension multi-body dynamic model based on Adams according to the sum of parameters of the automotive suspension system and a three-dimensional model; acquiring a road spectrum signal, and performing virtual iterative analysis by utilizing the multi-body dynamics model to obtain a fatigue load of the road surface; according to the three-dimensional model of the automobile suspension system, establishing a suspension and weld joint finite element model based on Hypermesh; carrying out unit load intensity analysis by adopting an inertia release method according to the suspension finite element model; and according to the result of the unit load intensity analysis and the fatigue load of the road surface, carrying out weld joint fatigue analysis based on the Ncode to obtain a weld joint fatigue damage value of the automotive suspension. Adams is comprehensively adopted to establish a multi-body dynamic model. Hypermesh is adopted to establish a finite element model and Ncode is adopted to analyze welding seam fatigue, so that a welding seam fatigue damage value of the automotive suspension is obtained, and meanwhile, virtual iterative analysis is also adopted, so that simulation precision is greatly improved, and simulation effect is improved.
Description
technical field [0001] The invention relates to the technical field of automobile detection, in particular to a method for calculating weld seam fatigue. Background technique [0002] With the rapid development of the automobile industry and the improvement of people's living standards, automobiles have become one of the indispensable means of transportation for people to travel and freight. [0003] In automobile parts, such as automobile suspension, part of the installation structure is welded, and the strength achieved by different welding methods will be different. In order to evaluate the safety of the vehicle, it is necessary to simulate the fatigue damage value of the weld. At present, the fatigue calculation method of the weld mostly uses a single finite element model for simulation calculation, and the calculation of the fatigue damage value of the weld is realized according to the parameters of the corresponding components and the simulated road surface. [0004] ...
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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/23G06F2119/06Y02T90/00
Inventor 贾慧芳余祯琦段龙杨黄晖余显忠邱星邱祖峰吴和兴
Owner JIANGLING MOTORS