江苏科技信息
江囌科技信息
강소과기신식
JIANGSU SCIENCE & TECHNOLOGY INFORMATION
2015年
13期
55-56
,共2页
加筋板%稳定性分析%屈曲载荷%有限元分析
加觔闆%穩定性分析%屈麯載荷%有限元分析
가근판%은정성분석%굴곡재하%유한원분석
stiffened panel structure%stability analysis%buckling strength%finite element method
对于铆接加筋壁板的稳定性问题,工程上采用基于Euler公式的线性屈曲公式进行稳定性校核。该方法一方面比较保守;另一方面,当问题涉及到弹性边界条件时,计算结果的精度存在不确定性。采用有限元方法对结构的承载能力进行仿真模拟,有助于去除分析过程中的人为因素,提高分析精度和可靠度,从而发掘结构的承载潜力。文章通过对设定的试验件,使用约翰逊—欧拉公式、大型有限元分析软件(MSC/NASTRANABAQUS)并结合试验进行稳定性对比分析。
對于鉚接加觔壁闆的穩定性問題,工程上採用基于Euler公式的線性屈麯公式進行穩定性校覈。該方法一方麵比較保守;另一方麵,噹問題涉及到彈性邊界條件時,計算結果的精度存在不確定性。採用有限元方法對結構的承載能力進行倣真模擬,有助于去除分析過程中的人為因素,提高分析精度和可靠度,從而髮掘結構的承載潛力。文章通過對設定的試驗件,使用約翰遜—歐拉公式、大型有限元分析軟件(MSC/NASTRANABAQUS)併結閤試驗進行穩定性對比分析。
대우류접가근벽판적은정성문제,공정상채용기우Euler공식적선성굴곡공식진행은정성교핵。해방법일방면비교보수;령일방면,당문제섭급도탄성변계조건시,계산결과적정도존재불학정성。채용유한원방법대결구적승재능력진행방진모의,유조우거제분석과정중적인위인소,제고분석정도화가고도,종이발굴결구적승재잠력。문장통과대설정적시험건,사용약한손—구랍공식、대형유한원분석연건(MSC/NASTRANABAQUS)병결합시험진행은정성대비분석。
Euler formula was used for calibrating the stability of riveted stiffened panels during engineering calculation. The approach was conservative and its accuracy is uncertain when it was used to deal with the question relates to the elastic boundary conditions. Finite element method for calculating bearing capacity of the structure was helpful to remove the human factor and improve the accuracy of analysis. In present work ,the stability of upper panel on the wing of domestic airliner was studied by using analytic method based on Johnson-Euler equations , numerical simulation (MSC/NASTRAN ABAQUS,etc.) and practical experiment.