Determination method for maximum stress of large-turning angle circular membrane under uniformly distributed load

专利类型：发明专利

语言：中文

申请号：CN201510194408.1

申请日：20150422

发明人：何晓婷孙俊贻练永盛蔡珍红郑周练王智谢小军

申请人：重庆大学

申请人地址：400044 重庆市沙坪坝区沙正街174号

公开日：20170721

公开号：CN104749033B

代理人：张先芸

代理机构：重庆博凯知识产权代理有限公司 50212

摘　　要：Abstract：The invention discloses a determination method for maximum stress of a large-turning angle circular membrane under a uniformly distributed load. The determination method comprises the following steps of fixedly clamping a non-prestressed membrane of which the Young's elastic modulus is E, the Poisson's ratio is V and the thickness is h by using a clamping device of which the inner radius is a to form a circular membrane structure of which the radius is a and the periphery is fixedly clamped, and transversely applying the uniformly distributed load q to the circular membrane to enable a turning angle theta after the membrane deforms to be greater than 20 degrees, so based on the accurate analysis on the static balance problem of the axisymmetric circular membrane, by utilizing a load measured value q, the maximum stress sigmam generated after the membrane deforms can be determined.

主权项：一种均布载荷下大转角圆薄膜最大应力的确定方法，其特征是：用一个内半径为a的夹紧装置,将杨氏弹性模量为E、泊松比为ν、厚度为h的无预应力的薄膜固定夹紧，形成一个半径为a的周边固定夹紧的圆薄膜结构，并对圆薄膜横向施加一个均布载荷q，使薄膜变形后的转角θ出现大于20°的情形，那么基于这个轴对称圆薄膜静力平衡问题的精确分析，利用载荷测量值q，由以下公式确定薄膜变形后的最大应力σ_m： $σ_{m} = \frac{a^{2 / 3} E^{1 / 3} q^{2 / 3}}{2^{5 / 3} h^{2 / 3} c关键词：法律状态：生效IPC专利分类号： G01N3/08var ShareData = new Array();
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