起重机焊接箱形梁的疲劳试验  

Fatigue tests for Welded trunk beams of cranes

作　　者：李亿祥[1] 

机构地区：[1]太原重型机械学院,山西太原030024

出　　处：《山西机械》2000年第2期55-58,共4页Shaanxi Machinery

摘　　要：通过常幅及变幅疲劳试验 ,得出焊接箱形梁的疲劳强度 P-S-N曲线方程及给定寿命下疲劳强度的分布 ,论证变幅与常幅疲劳试验的相互关系 ;By the fatigue tests under constant and varied amplitude loading, the P-S-N curve equations and the given life span distribution function of the fatigue strength are derived respectively for the welded trunk beams of cranes The relation between the constant and varied amplitude fatigue tests is investigated as well The extended histories of the fractures are obtained, and the fracture mechanism is analyzed

关 键 词：起重机 焊接箱形梁 疲劳试验 

分 类 号：TH210.3[机械工程—机械制造及自动化] TG405[金属学及工艺—焊接]