NVH Analysis of Acoustic Materials by Using Aluminum and Steel metals

Sound quality evaluation has turned into a standard idea in the structure in the field of vehicle acoustic performance optimization in an endeavor to determine the issue active noise control (ANC) techniques were created where auxiliary sources were proposed to lessen the noise inside the cabin. Therefore an endeavor has been made in this paper to audit the advancements so far did in the field of optimization thinks about on decrease of noise in the truck cabins by using acoustic materials. In light of this, it is to investigate the possibility of acoustic materials as aluminum and steel metals an option with plan to improve the cabin noise by NVH analysis can be carried out by using Ansys and Hypermesh software’s. By finding the analysis values of frequency, sound and weighted sound can be concluded the acoustic materials are good for quieter applications.

An Experimental and Numerical Investigation on Bolted Joints of Woven Glass Fabric/Epoxy Composites

In the present work, an attempt is made to study the mechanical response of woven glass fabric/epoxy composite laminates using numerical modelling and experimentation. For this two different configurations namely double lap joined with single and double bolts are chosen. These laminates are subjected to numerical modelling using finite element analysis to study the joint strength and stress analysis. The joint strength of woven glass fabric composites is studied experimentally by conducting tensile test. Along with this the effect of varying edge distance to diameter ratios are studied both numerically and experimentally to arrive at safe design. Both numerical analysis and experimentally obtained bearing strength of composite laminated bolted joints are correlated. This is done in order to predict the the failure load and failure mechanisms in the composite laminate bolted joints. The variation in the numerically and experimentally obtained bearing strength values were well within 5% diference for both cases of single and double bolted joints.