Welding finite element model construction method and checking method
A construction method and finite element technology, which is applied in the field of welding finite element model construction and verification, can solve the problems of increasing the workload of designers and reducing the speed of finite element modeling, and achieve the effect of increasing speed and reducing workload
Pending Publication Date: 2020-01-24
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is: the current welding finite element model construction method is mainly to manually create rigid elements and manually arrange solder joints, which not only increases the workload of designers, but also reduces the speed of finite element modeling
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[0053] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.
[0054] The current welding finite element model construction method is mainly to manually create rigid elements and manually arrange welding points, which not only increases the workload of designers, but also reduces the speed of finite element modeling. Moreover, the current welding finite element model verification method mainly uses manual engineering algorithms, which greatly reduces the speed of weld ve...
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The invention discloses a welding finite element model construction method, comprising the following steps: geometrically processing a geometric model of a converter cabinet framework; according to the contour auxiliary lines of all the parts in the geometric model of the framework, grouping the parts forming the geometric model of the framework in pairs, wherein the two parts in the same group are adjacent; aiming at each group of parts in all groups of parts, executing the following operations to construct a finite element model with a welding seam and a corresponding welding seam unit: according to the position information of the nodes of the respective connecting ends of the two parts in the group, determining the distance information between the nodes of the respective connecting endsof the two parts; determining whether a weld joint exists between nodes of respective connecting ends of the two parts or not according to the distance information; and in the case of determining that the weld exists, establishing a weld unit on the weld. Therefore, according to the welding finite element model construction method, the workload of designers can be reduced, and the finite elementmodeling speed is greatly increased.
Description
technical field [0001] The invention relates to the technical field of converters, in particular to a welding finite element model building method and a checking method. Background technique [0002] With the continuous progress and rapid development of high-speed railways and urban rail transit, high-speed railways and bullet trains have become necessary means of transportation in people's lives. As an important part of the traction system, the converter has been designed (especially the lightweight design of the converter cabinet) and manufactured using Computer Aided Engineering (CAE) technology extensively. [0003] The converter cabinet is composed of multiple components, which are mostly made of aluminum alloy, stainless steel or carbon steel, and the connection methods are mainly welding, bolt connection and riveting. In the welding strength and fatigue simulation of the converter cabinet, more than 20,000 welding units need to be established. However, the current c...
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IPC IPC(8): G06F30/23
Inventor 张文威丁杰邓创华何艳飞胡昌发朱明杰王亮陈城华
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD