This 3-sentence summary provides the essential information from the document: The document is a thesis submitted by Mahdi Hashemi to the University of Zanjan's Faculty of Engineering, Department of Mechanics, to partially fulfill the requirements for an M.Sc. in Mechanics. The thesis, supervised by Dr. Ramin Khamedi and advised by Dr. Isa Ahmadi, investigates micromechanical modeling of the behavior of wood plastic composites and is titled "Investigation of micromechanical modeling of wood plastic composites (WPC) behavior."