Analyzing structural durability in the frequency domain
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United States of America Patent
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Apr 28, 2015
Grant Date -
Jun 4, 2009
app pub date -
Nov 30, 2007
filing date -
Mar 14, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A method of analyzing the durability of a structure. Load-controlled testing is performed on samples of a composite material of the structure to relate critical strain invariants of the material to cyclic rates of strain invariant accumulation and frequencies associated with the cyclic rates. The material is characterized based on effective properties of the material, including the cyclic rates of strain invariant accumulation. Laminate properties and a geometrical definition of the structure are used to obtain a parametric model. Material characterizations are used to determine model element frequency responses to applied load conditions. Each element's frequency responses and critical strain invariants are used to determine whether damage is indicated at the element. Progression of damage is tracked and accounted for in the model.
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International Classification(s)
- G01L:MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL ....
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- G06F:ELECTRIC DIGITAL DATA PROCESSING
- G06G:ANALOGUE COMPUTERS
- G01B:MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIME....
- G21C:NUCLEAR REACTORS
- G01F:MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUI....
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