What are the equations I should use to find stress and strain in multi-layer flexible pavement system through pavement depth ?

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If the HMA material is assumed to be elastic material which test is represent it's modulus of elasticity (resilience or dynamic)?

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Kundan Meshram

Dear Sir,

pl check it.

https://www.civil.iitb.ac.in/~kvkrao/uploads/5/9/3/7/59372049/ce742lec3.pdf

https://engineering.purdue.edu/CE/Academics/Groups/Materials/Details/FacultyInfo/JHaddock/CE563PDFFiles/StressesinFlexiblePavements.pdf

https://www.academia.edu/3997093/Stresses_and_Strains_In_Flexible_Pavement_Using_Computer_Program

Muath A Al-Tarawneh

Thanks.I already have these attachments but the problem that there are no-equation for three layered system there are just charts for specific points and I have no idea what is the theoretic background for the charts.

Best!