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Multiple-working-condition adaptivity topological optimization method of automotive transmission case

A technology for automobile transmissions and transmission housings, which is applied in instruments, special data processing applications, electrical digital data processing, etc. to achieve accurate topology optimization results, reduce risks, and improve accuracy.

Inactive Publication Date: 2014-11-05
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

But it has not been reported that anyone has applied this theory to the topology optimization design of the transmission housing.

Method used

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  • Multiple-working-condition adaptivity topological optimization method of automotive transmission case
  • Multiple-working-condition adaptivity topological optimization method of automotive transmission case
  • Multiple-working-condition adaptivity topological optimization method of automotive transmission case

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Embodiment Construction

[0023] A multi-working-condition adaptive topology optimization method for an automobile transmission housing. First, the objective function extreme value of the transmission housing under each working condition is calculated according to the compromise programming formula for the objective function of the multi-working-condition topology optimization model. Carry out reconstruction, and then perform topology optimization calculations, so that the obtained topology structure can satisfy each working condition at the same time, so that the topology optimization results of multiple working conditions are more accurate.

[0024] The initial design space is established through UG software, and then the multi-working-condition topology optimization calculation of the transmission housing is performed with the help of Hyperworks software. The specific process is as follows:

[0025] 1. Establishment of finite element model:

[0026] Firstly, based on the gear pinion and the shift m...

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Abstract

The invention relates to a multiple-working-condition adaptivity topological optimization method of an automotive transmission case. A compromise programming method in mathematics is applied to a multiple-working-condition topological optimization design of the automotive transmission case. The method does not adopt a traditional method, i.e. a linear weighting method, used for solving multiple-working-condition topological optimization problems, instead, a target function extreme value is obtained under each working condition, a target function of a multiple-working-condition topological optimization model is reconstructed, then, topological optimization calculation is carried out, and an obtained topological structure can simultaneously satisfy various working conditions. While the obtained topological structure satisfies various working conditions, a situation that the linear weighting method can not solve feasible region is a non convex set can be avoided, and therefore, a multiple-working-condition topological optimization result is more accurate.

Description

technical field [0001] The invention relates to a multi-working-condition self-adaptive topology optimization method for an automobile transmission housing, which belongs to the field of transmission housing design. Background technique [0002] As the support body of the automobile transmission system, the transmission housing is affected by the impact force transmitted by the transmission gear shaft and the external body, and it is very easy to cause local fracture and failure due to insufficient strength and rigidity, resulting in the failure of the transmission function. In order to ensure the reliability of the transmission casing, designers usually increase the local structural volume to improve the strength and stiffness of the stressed part of the casing. The increase in structural volume will easily lead to an increase in the amount of materials and the quality of parts, which will cause negative effects on product costs and vehicle fuel consumption. An excellent t...

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Application Information

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IPC IPC(8): G06F17/50
CPCY02T10/40
Inventor 褚超美周进奚成捷池会强梅超顾放申震宋俊胡天帅
Owner UNIV OF SHANGHAI FOR SCI & TECH
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