چکیده مقاله
This study aims to propose and discuss an adaptive P norm method for stress based structural optimization problems When stress is considered in the optimal design process, one of the main challenges is the large number of constraints owing to the local quantity of stress The problem is more important in stress constrained topology optimization where the number of design variables is huge and also the number of stress constraints is at least equal to the number of elements in finite element discretization To overcome this drawback, a popular and efficient method is the P norm method The P norm relation approximates the maximum stress in structure and is more accurate when the P value is large enough However, assigning a very large number for the P value causes instabilities in the optimization process In this study, utilizing an adaptive value for P is investigated It has been shown that employing the adaptive value for the P norm usually leads to better optimized solutions in structural optimization when stress is considered as a constraint or objective function The reason is discussed in this study by using a simple truss problem Moreover, the method is investigated in a continuum topology optimization problem
کلیدواژهها
نویسندگان
Mohammad Ali Yousefzadeh
Civil and Environmental Engineering Department, School of Engineering, Shiraz University,Shiraz, Iran
Meisam Takalloozadeh
Civil and Environmental Engineering Department, School of Engineering, Shiraz University,Shiraz, Iran
شیوه ارجاع
Yousefzadeh, Mohammad Ali and Takalloozadeh, Meisam,1402,Adaptive P-norm Method in Stress-Based StructuralOptimization,13th International Congress on Civil Engineering,Tehran
ارائهشده در
مجموعه مقالات سیزدهمین کنگره بین المللی مهندسی عمران25 مهر 1402 · تهران