Open AccessAnalysis Fracture Behaviour of Asphalt Mixtures in Freezing and Thawing Cycles Conditions Using Linear Elastic Fracture Mechanic (LEFM) Technic
Author(s) -
Yousef Reza Bayrami,
Shams Nobakht Dudran
Publication year - 2019
Publication title -
journal of research in science, engineering and technology
Language(s) - English
Resource type - Journals
ISSN - 2693-8464
DOI - 10.24200/jrset.vol4iss04pp22-30
Subject(s) - composite number , matlab , software , isotropy , fracture (geology) , computer science , engineering , mechanical engineering , structural engineering , materials science , composite material , physics , quantum mechanics , programming language , operating system
Considering the military implementation prohibitions and highly developed technologies of composite materials , this project studies about increasing the power of martial and fire in Gyroplanes and light Helicopters by design, optimization and manufacturing of composite launchers instead of isotropic types. Using composite type launchers have advantage of lower weight, higher life and simplicity in manufacturing. Modeling and analysis accomplished by Abaqus Software and the fiber composite directions improved by coding in Matlab Software. The optimization process completed by linking both softwares. Till now, more than 800 successful shots have been made in several centers using composite launchers. Because of easy manufacturing of this kind of launchers, there is no need to have advanced equipments and all the works have been provided by semi-skilled workers in the simple workshops.