The compression parallel to grain stress-strain model of twelve tropical wood species with specific gravity range of 0.39 to 0.67 g/cm³

This study aims to propose a compression parallel to grain stress-strain model equation for tropical wood species with a specific gravity range of 0.39 to 0.67 g/cm3. The stress-strain model is compiled from the results of experimental testing of twelve tropical wood species based on empirical data of stress-strain relationship curves from destructive testing. The test uses a reference according to ASTM D143-22. The results of this study are empirical equations for calculating and creating stress-strain relationship curves in the longitudinal direction of wood (compression parallel to grain).