884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

    楊新華
    （冶金工業(yè)部安全環(huán)保研究院 武漢 430081）

[提要]  通過(guò)實(shí)驗(yàn)和有限元分析，研究了開(kāi)槽法測(cè)試結(jié)構(gòu)不變工作應(yīng)力的可行性，根據(jù)有限元計(jì)算結(jié)果分析了開(kāi)槽深度和槽間距與應(yīng)力釋放率和應(yīng)力集中系數(shù)之間的關(guān)系，提出了采用開(kāi)槽法測(cè)試結(jié)構(gòu)工作應(yīng)力時(shí)應(yīng)選擇的合理開(kāi)槽深度和槽間距。
[關(guān)鍵詞]  開(kāi)槽法 工作應(yīng)力  有限元分析

Based on experimental research, a finite element analysis to inspect constant working stresses of structures by grooving method is presented. It clearly shows that the stress release rate and the stress concentration coefficient depend on not only the depth of grooves but also the distance between grooves. At last, the reasonable depth and distance are given.
Keywords: grooving method; working stress; finite element analysis