A R DIGITECH International Journal Of Engineering, Education And Technology (ARDIJEET) www.ardigitech.in ISSN 2320-883X, VOLUME 3, ISSUE 2, 01/04/2015 1 FINITE ELEMENT Modal ANALYSIS OF 4X2 TRUCK CHASSIS USING Pro/Mechanica Mahvi Malik Shahzad*1 ,Shaikh Rizwan*2,Ansari Mudassir*3 *1 (B.EMechanical,PGDBM 9 years of design experience in industry& 4 years in teaching) *2(B.E MMATNC,Mansoora,Malegaon) *3(Prof &M.E Student SNDCollege Of Engineering Yeola) mahvimalikshahzad@gmail.com*1,rizwankshaikh7@gmail.com*2,mudassir2n@gmail.com*3 Abstract Finite element modal analysis of a 4X2 truck chassis plays an important role during design stages. Nowadays, there are many research papers and development programs available in the market especially by the truck manufacturers, which are very much related to this research work. The paper reviews the most important research works, technical journal and conferences papers that have been published in the last thirteen year period (2002-2014). The paper focused on modals analysis of the truck chassis using finite element package Pro/Mechanica. The results of reading this paper will give the researcher a summary of some recent and current developments in the field of vehicle design using finite element stress analysis. Keywords:Pro/Mechanica, I. Introduction Transportation industry plays a major role in the economy of modern industrialized and developing countries. The total and relative volume of goods carried on heavy trucks is dramatically increasing. The chassis structure must safely support the weight of the vehicle components and transmit loads that result from longitudinal, lateral, and vertical accelerations that are experienced in a racing environment without failure. There are many aspects to consider when designing a chassis, including component packaging, material selection, strength, stiffness and weight. The primary objective of the chassis is to provide a structure that connects the front and rear suspension without excessive deflection. The design of a vehicle structure is of fundamental importance to the overall vehicle performance. The vehicle structure plays an important role in the functionality of the vehicle. Generally, truck is any of various heavy motor vehicles designed for carrying the attached loads, such as the engine, transmission and suspension as well as the passengers and payload. The major focus in the truck manufacturing industries is design of vehicles with more pay load. Using higher strength steels than the conventional ones are possible with corresponding increase in pay load capacity. The chassis of trucks which is the backbone of vehicles that integrates the main truck component systems such as the axles, suspension, power train, cab and trailer etc., as shown in Figure1, is one of the possible candidates for substantial weight reduction [1]. Along with strength, an important consideration in chassis design is to have adequate bending and torsional stiffness for better handling characteristics. So, strength and stiffness are two important criteria for the design of the chassis [2,3]. Stress-strain relations used to describe deformation of a material are different for the elastic and plastic domain. Consequently, it is important to know if the stress state is in the elastic or plastic domain. For this purpose a yield criterion is used to suggest the limit of elasticity and the initiation of yielding in a material under any combination of stresses. There are several Published in A R DIGITECH