Difference between static and dynamic analysis of structures
Answers
Answer:
pls..................................brainliest me........................................
Explanation:
The structural analysis focuses on the changes occurring in the behavior of a physical structure under observation when provided with a force or in case of structures,load.Now if this load is quasi(very slow),the inertia forces from the basis of newton's first law of motion can be neglected and the analysis becomes static.The static loads are very slow on the time rate graph.Static structure analysis methods are:
non-linear static analysis
Linear static analysis
Opposite to this,if the force or load applied have a high rate of change of velocity during the process then it comes under DYNAMIC analysis,the cause and effect portion comes in to play here.The system under consideration is observed for the development occurring during a course of time and then analyzing the cause of those changes. A dynamic analysis is also related to the inertia forces developed by a structure when it is excited by means of dynamic loads applied suddenly (e.g., wind blasts, explosion, earthquake).
Now dynamic loads are always applied as a function of time or frequency and these time or frequency-varying load application induces time or frequency-varying response (displacements, velocities, accelerations, forces, and stresses). These time or frequency-varying characteristics make dynamic analysis more complicated and more realistic than static analysis.Dynamic structure analysis method are :
Non-linear time history analysis
Non-linear static analysis
Linear elastic time history analysis
Modal superposition
Linear static analysis
All the loads are considered dynamic in nature as at some point of time they were absent and that includes the self weight of the structure also.
The applied action or force’s acceleration is compared with the structures natural frequency to find weather analysis is static or dynamic in nature.