Harmonic analysis is used to determine the steady-state response of a linear structure to loads that vary sinusoidally (harmonically) with time, thus enabling you to verify whether or not your designs will successfully overcome resonance, fatigue, and other harmful effects of forced vibrations. This analysis technique calculates only the steady-state, forced vibrations of a structure. … Continue reading Harmonic analysis: A steel disk example
modal analysis
The application of MACRO and *DOWHILE
In this post, I will show an example of using MACRO and *DOWHILE. The APDL is developed to model an experiment as shown below. Essentially it is a clamped-clamped cracked beam carrying a body. An important feature of the body is that its mass distributes far away from its centroid, hence the rotary inertia would … Continue reading The application of MACRO and *DOWHILE
Non-linear analysis of a point-fixed glass curtain wall cable-truss structure
Fig.1 Typical glass curtain walls Some assumptions and simplifications in this problem: Elastic materials Cables are modeled using LINK10 elements with the tension-only option Trusses are modeled using BEAM44 (or BEAM188) elements The glass wall is modeled using SHELL63 elements. Wind load distributes evenly on the surface. The aim of this problem is to calculate … Continue reading Non-linear analysis of a point-fixed glass curtain wall cable-truss structure
Nonlinear analysis of a cable-membrane structure: from shape-finding to static and modal analysis
Fig.1. A typical cable-membrane structure The following assumptions are made in this example: Cables are discretized using LINK10 elements. The membrane is discretized using triangular SHELL41 elements with 'cloth' feature turned on. No slip between cables and membrane. The material complies with Hooke’s Law. The material is orthotropic and elastic. The two principal axes of … Continue reading Nonlinear analysis of a cable-membrane structure: from shape-finding to static and modal analysis
Xutao Sun 