جلسه هجدهم: آموزش جامع روش های پیشرفته آنالیز دینامیکی غیر خطی (دکتر حشمدار)

AN EFFICIENT METHOD FOR NONLINEAR DYNAMIC ANALYSIS OF 3D SPACE STRUCTURES

Prof.Dr.Hashamdar

NONLINEAR DYNAMIC RESPONSE ANALYSIS BY MINIMIZATION OF TOTAL POTENTIAL DYNAMIC WORK

The cable structures are light and flexible and they undergo appreciable deflections when subjected to external loading. It is also noted that the method of structural analysis should consider the changes of geometry of structures. Hence, the classical linear theories of structural mechanisms cannot be used for the solutions of highly nonlinear structures because high nonlinear structure has maximum changes of geometry and classical theories could not support high non-linearity behaviour of structure

The general mass determinant

The stiffness determinant for a pin jointed member

The orthogonal damping matrices

The damping is energy lost in vibration due to work done by forces resisting the motion. These forces are caused by hysteresis losses in the member, friction in joints and resistance by the surrounding mass of air. In practice the damping matrices are usually constructed from knowledge of the damping ratios in different modes as value for these are more easily obtainable by standard resonance testing.

روش بهینه سازی و تعریف ریاضی آن در معادله حرکت دینامیکی

آموزش جامع روش های پیشرفته آنالیز دینامیکی غیر خطی سازه های فضائی سه بعدی

پرفسور حشمدار