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汽車后橋的非保守模糊可靠度設(shè)計(jì)
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    摘要:

    從強(qiáng)度安全性和輕量化的角度出發(fā)，綜合運(yùn)用了概率密度函數(shù)聯(lián)合積分法與功能密度函數(shù)積分法，整理并推導(dǎo)了汽車后橋的非保守模糊可靠度計(jì)算公式，即應(yīng)力、強(qiáng)度及構(gòu)件的幾何尺寸等參數(shù)都為正態(tài)分布，隸屬函數(shù)為k次拋物線分布時(shí)的模糊可靠度計(jì)算公式；通過(guò)VB編程實(shí)現(xiàn)汽車后橋非保守模糊可靠度設(shè)計(jì)數(shù)值解的計(jì)算，根據(jù)輸入的原始數(shù)據(jù)、原函數(shù)與積分區(qū)間的特點(diǎn)進(jìn)行積分變換，然后利用中點(diǎn)公式積分法與龍貝格求積法進(jìn)行積分計(jì)算。程序可直接應(yīng)用于設(shè)計(jì)計(jì)算中，以提高汽車后橋的設(shè)計(jì)水平。

    Abstract:

    Considering safety and lightening of intensity, the non-conservative fuzzy reliability design formulas about automobile back-axle housing were deduced by integrating probability density and function density. The forces, intensities and geometry dimension of component etc. are normal distribution, and subordinate is parabola of exponential k. Firstly, the integral change was achieved according to initial data , function imported and extent of integrated. Secondly, the number result about the non-conservative fuzzy reliability design of automobile back-axle housing with VB program in the computer was achieved by using middle-points integral calculus and Romberg integration. The results show that this program can be used in design of automobile backaxle housing for rising up level of design.  

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王鐵,吳凈,周淑文,張國(guó)忠.汽車后橋的非保守模糊可靠度設(shè)計(jì)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2008,39(9):179-182.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(9):179-182.

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