Midas Civil Heat of Hydration and Thermal Stress Analysis
Definition
Midas Civil heat of hydration and thermal stress analysis is the coupled temperature and stress workflow for mass concrete and concrete-age effects.
How It Works
The manual describes heat transfer by conduction, convection, internal heat generation, pipe cooling, initial temperature, ambient temperature, and prescribed temperature. Thermal stress analysis uses equivalent age or maturity to model concrete strength development and combines temperature strain, shrinkage strain, and creep strain in stress evaluation.
Hydration analysis therefore has two layers: first solve the temperature field, then transfer the temperature and age-dependent material state into structural stress analysis.
Solver Development Notes
Thermal DOFs, heat capacity, conductivity, convection, heat source, and boundary temperature data need a field-problem input schema.
Structural transfer must define thermal strain, reference temperature, age-dependent modulus or strength, shrinkage, and creep.
Equivalent-age and maturity functions should be regression-tested against simple closed-form or reference-solver cases.
Output should include temperature history, thermal stress, crack risk indicators, and structural reaction effects.
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