| 伽马隶属函数的汽车零部件对数正态设计 |
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| 引用本文： | 王铁,张兴,周淑文.伽马隶属函数的汽车零部件对数正态设计[J].汽车科技,2008(2):14-17. |
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| 作者姓名： | 王铁 张兴 周淑文 |
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| 作者单位： | 1. 沈阳理工大学汽车与交通学院,沈阳,110168
2. 东北大学机械工程与自动化学院,沈阳,110004 |
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| 基金项目： | 辽宁省博士科研项目
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沈阳理工大学博士启动项目 |
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| 摘 要： | 从轻量化和强度安全性的角度出发，综合运用概率密度函数联合积分法与功能密度函数积分法，整理并推导了伽马型隶属函数的汽车零部件对数正态模糊可靠度计算公式，即应力、强度都为对数正态分布，隶属度函数为伽马型分布的模糊可靠度计算公式。通过VB编程实现数值解的计算，根据输入的原始数据、原函数与积分区间的特点进行积分变换，然后利用中点公式积分法与龙贝格求积法进行积分计算。本程序可直接应用于设计计算中，以提高汽车零部件的设计水平．
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| 关 键 词： | 车辆工程 零部件 可靠性 模糊数学 |
| 文章编号： | 1005-2550(2008)02-0014-04 |
| 修稿时间： | 2007年12月27 |
The Design of the Lognormal Fuzzy Reliability about Vehicle Parts with Gamma Subordinate |
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| WANG Tie,ZHANG Xing,ZHOU Shu-wen.The Design of the Lognormal Fuzzy Reliability about Vehicle Parts with Gamma Subordinate[J].Automobile Science and Technology,2008(2):14-17. |
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| Authors: | WANG Tie ZHANG Xing ZHOU Shu-wen |
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| Institution: | WANG Tie,ZHANG Xing, ZHOU Shu-wen ( 1.Shenyang Ligong University ,Shenyang 110168 ,China; 2.Northeastern University,Shenyang 110004, China) |
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| Abstract: | With considering light weight and safety of strength, using integrations of both distribution＇s density and function＇s density,the lognormal fuzzy reliability formulas about vehicle parts that forces,strengths are lognormal distribution and subordinate is Gamma distribution were gotten;First integral change was achieved according to initial data and function imported and extent of integrated.Second this number result with VB program in the computer was achieved by using middle-points integral calculus and Romberg integration.This program can be used in design of vehicle engineering for raising level of design. |
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| Keywords: | vehicle engineering parts reliability Fuzzy Mathematics |
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