Nvh analysis using nastran software

Introduction brake analysis and nvh noise, vibration and harshness. Frf based approach used to analyze engine and tire loads. Aggressive use of nvh simulation can identify potential issues earlier in. Natran, md nastran, nx nastran and altair radioss software so that it can be used in industrial vibration analysis. Show full abstract been used to perform normal mode analysis and frequency response analysis using msc patran nastran software. Mpcci fsimapper is a vendorneutral mapping software, building. Brake analysis and nvh noise, vibration and harshness optimization have become critically important areas of application in the automotive industry. Hands on experience in integrating the vehicle subsystem. First, car body geometry is modeled in catia and meshed in hypermesh software. Nvh analysis and improvement of a vehicle body structure using doe method. The improvement of a vehicle body structure under the constraint of noise, vibration and harshness nvh behavior is investigated by using design of experiments doe method.

The software has improved accuracy for 2d and 3d assessments of rotors by incorporating mass and speed correction terms. Full vehicle vibration and noise analysis based on substructure. Coustyx is a next generation analysis software that integrates advanced boundary element formulations with fast multipole method to yield fast, accurate nvh solutions. Msc software recently posted the performance results for the latest version msc. Cdhamls has been implemented with an interface to msc. Low stiffness for maximum structureborne noise isolation. Msc nastran is one of the most widely used structural analysis.

Hands on experience on linear analysis nonlinear analysis dynamic analysis and fatigue analysis using nastran solver. This analysis method has been successfully applied to 4 different programs at gm and the simulation. Webinar how to predict nvh performance of your design at high. Msc nastran is a multidisciplinary structural analysis application used by engineers to perform static, dynamic, and thermal analysis across the linear and nonlinear domains, complemented with automated structural optimization and award winning embedded fatigue analysis technologies, all enabled by high performance computing. A typical challenge in nvh analysis is identifying the path of energy flow from source to a point of interest. Nastran is now increasingly being used to stabilize the brake system modes to eliminate brake squeal and to perform nvh optimization for predicting the vehicle tactile and acoustic responses in relation to. Competing nvhrequirements for engine and gearbox mount stiffness.

Fea project nvh done at wayne state university usa using nastran software and hypermesh. In terms of nvh analysis, body structure is a significant. Pdf nvh analysis and improvement of a vehicle body. Important to engineers creating designs for the transportation industries will be msc nastran s improvements for rotordynamics analysis. Then, a modal analysis between 050 hz is done by msc nastran. Powertrain and road noise analysis using full cae or hybrid approach. Actran is the premier acoustics software to solve acoustics, vibroacoustics, and aeroacoustics problems. Nvh optimization on nec supercomputers using mscnastran. Msc updates fea, fatigue, material and nvh simulation. Abaqus, msc nastran finite element solver msc adams, simpack multi body simulation mamba simulation of joint contact phenomena mnoise acoustic simulation postprocessor femfat lab vi load generation based on measurements body in white nvh. Acoustic and vibration comfort have a growing importance in vehicle. Getting to the fundamentals of a modal analysis in nastran incad. Preprocessing and solving finite element analysis for nvh.