Optical Absorptivity in Abaqus

[MehdiMir]

Hello All,

I am doing laser ultrasonic simulation in Abaqus to get thermoelastic lamb wave generation in aluminum specimen.

Up to now, I have defined conductivity, density, elastic properties, thermal expansion and specific heat, but according o the research papers that I read, I have to define optical absorptivity of the specimen to run the simulation, however I can not find such parameter in abaqus.

Does anyone has an idea?

I appreciate your attention.

Thanks