DYNAMIC ANALYSIS

Dynamic analysis :

Explore two new dynamic analyses based concept of FEA program profiling:

Frequency Spectrum Analysis. We show how analyzing the frequencies of program entities in a single execution can help programmers to decompose a program, identify related computations, and find computations related to specific input and output characteristics of a program.

First, it is analyzed as a linear element based on the effective stiffness while ignoring the effective damping in static and response spectrum analyses.

Time history analysis: In linear time history analysis, it is analyzed as a linear element based on the effective stiffness, and the effective damping is considered only when the damping selection is set as “Group Damping”. In nonlinear time history analysis, the effective stiffness acts as virtual linear stiffness, the stiffness matrix does not become renewed even if it has nonlinear properties.

Coverage Concept Analysis. Concept analysis of test coverage data computes dynamic analogs to static control flow relationships such as domination, post domination, and regions. Comparison of these dynamically computed relationships to their static counterparts can point to areas of code requiring more testing and can aid programmers in understanding how a program and its test sets relate to one another.

Strain energy concept:

In order to reflect different damping properties for different elements in response spectrum and modal superposition analyses, damping ratios need to be assigned in the Specified Element and Boundaries within the Group Damping menu. Modal damping ratios based on the strain energy concept are then calculated based on the results of an eigenvalue analysis.

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