Advanced technical ceramics - mechanical properties of ceramic composites at high temperature under inert atmosphere - determination of shear strength by compression loading of notched specimens 高級工業(yè)陶瓷.惰性氣體環(huán)境中高溫情況下陶瓷成分的機械特性.通過有凹槽試樣的壓力荷載測定剪切強度
Advanced technical ceramics - mechanical properties of ceramic composites at room temperature - part 4 : determination of interlaminar shear strength by compression loading of notched test specimens 先進工藝陶瓷.室溫下陶瓷復合材料的機械性能.第4部分:用切口試樣的壓縮負荷法測定層間的剪切強度
Advanced technical ceramics - mechanical properties of ceramic composites at high temperature under inert atmosphere - determination of shear strength by compression loading of notched specimens 高級工業(yè)陶瓷.惰性氣體環(huán)境中高溫情況下陶瓷復合材料的機械特性.通過有凹槽試樣的壓力荷載測定剪切強度
The main structure stress of the car body is particularly analyzed . it is analyzed and calculated under vertical load case , lengthwise stretch load case , lengthwise compression load case , air pressure power load case , operating load case . result shows : the structure distortion harmonize , strength - weakness positions represent local stress focus 通過對垂向載荷工況、縱向拉伸載荷工況、縱向壓縮載荷工況、氣動載荷工況和運用狀態(tài)垂向載荷工況的分析計算,結果表明:該車鋼結構變形協(xié)調(diào),強度薄弱部位主要表現(xiàn)為局部應力集中。
The main research is below : ( 1 ) the influence to intensity and rigid with corner angle ( 60 , 75 and 90 degree ) of crack and the board axes ( 2 ) do a fem stress / strain and crack growth simulation analysis when the corner angle of crack and the board axes is 60 degree ( 3 ) do a intensity resume analysis for the structure which is repaired with a titanium patch in a mechanical way when the corner angle of crack and the board axes is 60 degree through simulation analysis for three failure criterion , we have : ( 1 ) in 60 , damage extend quickly with damage analysis in hashin criterion ; it is slower for analysis in maximum stress or hashin - rotem criterion . ( 2 ) in special term ( physical condition incision , shape or maximum load ) the compression strength of the stiffened plate will decline 45 % ~ 50 % under compression loads 通過采用三個不同損傷判據(jù)的數(shù)值仿真模擬,得到如下結論: ( 1 )在60時,用hashin判據(jù)進行的損傷分析,損傷擴展較快;最大應力及hashin - rotem判據(jù)進行的損傷分析,損傷擴展基本相當,且較慢; ( 2 )在所給加筋板的物理條件、切口大小及形狀、最大載荷等一定的條件下,該加筋板在壓縮載荷作用下,其壓縮強度下降了45 50 ; ( 3 )在本文提及到的機械連接修理方法以及載荷條件下,修理后的結構強度恢復能夠滿足戰(zhàn)時要求。