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An Optimal Design Method for Exhaust Pipe

An optimized design and exhaust pipe technology, applied in design optimization/simulation, computer-aided design, calculation, etc., can solve the problem of large difference between the theoretical life of the exhaust pipe and the actual life

Active Publication Date: 2021-07-20
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an optimal design method of the exhaust pipe to solve the problem that there is a large difference between the theoretical life of the exhaust pipe and the actual life of the exhaust pipe in the design method of the exhaust pipe

Method used

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  • An Optimal Design Method for Exhaust Pipe

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Embodiment Construction

[0022] The core of the present invention is to provide an optimal design method of the exhaust pipe to solve the problem that the theoretical life of the exhaust pipe is greatly different from the actual life of the exhaust pipe in the design method of the exhaust pipe.

[0023] In order to enable those skilled in the art to better understand the technical solutions provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] Such as figure 1 As shown, an optimal design method of an exhaust pipe provided in an embodiment of the present ...

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Abstract

The invention discloses an optimal design method of an exhaust pipe, which calibrates the temperature field of the exhaust pipe in the three-dimensional model and the test temperature measurement results of the exhaust pipe sample of the corresponding structure until the matching range of the calibration is met; The calculated temperature field of the exhaust pipe in the three-dimensional model is basically consistent with the actual temperature field of the actual exhaust pipe sample, and the low-cycle fatigue life of the exhaust pipe is based on the stress field parameters and the exhaust gas in the three-dimensional model. The material damage constitutive model of the exhaust pipe at different temperatures is used to calculate the low cycle fatigue life, which fully takes into account the material damage behavior of the exhaust pipe at different temperatures. Therefore, the optimal design method can be used to calculate the The theoretical life of the exhaust pipe is more accurate and closer to the actual life of the exhaust pipe in the application process.

Description

technical field [0001] The invention relates to the technical field of optimal design, in particular to an optimal design method of an exhaust pipe. Background technique [0002] In the traditional exhaust pipe design method, the life calculation of the exhaust pipe is based on the evaluation of the stress amplitude and equivalent plastic strain of the exhaust pipe under steady-state conditions, but it is found that this method is used to calculate The theoretical life of the exhaust pipe obtained is quite different from the actual life of the exhaust pipe in practical applications. [0003] To sum up, how to solve the problem of the large difference between the theoretical life of the exhaust pipe and the actual life of the exhaust pipe in the design method of the exhaust pipe has become a technical problem that those skilled in the art need to solve urgently. Contents of the invention [0004] The purpose of the present invention is to provide an optimal design method o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/23G06F30/28G06T17/20G06F113/14G06F119/04G06F119/08
CPCG06T17/205G06F30/23G06F30/28G06F2113/14G06F2119/04G06F2119/08
Inventor 李卫吕顺李德华马庆镇
Owner WEICHAI POWER CO LTD
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