Hello, I want to use USDFLD to define FIELD(1). In my model, elastic modulus is Temperature dependent value. (in static transient heat analysis) However, it is depending on not a simple current temperature but cumulative temperature value over the time. (Elastic modulus is changed depending on the cumulative temperature value (5+10+15....) If cumulative temperature value is large, Elastic modulus become large. If not, elastic modulus is small. I assumed I need to use USDFLD subroutine for solving this problem.
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