Structural Analysis of FAW Dump Truck Chassis Frame Made of Composite Materials

Abstract

The Chassis Frame Forms The Backbone Of A Heavy Vehicle. Its Principal Function Is To Safely Carry The Maximum Load For All Designed Operating Conditions. This Paper Describes Structural Analysis Of Heavy Duty Truck Chassis. Structural Analysis Involves Static And Dynamics Analysis To Determine The Key Characteristics Of A Truck Chassis. The Static Analysis Is Done When The Chassis Frame Is Subjected To Three Different Load Cases Such As Bending, Torsion And Combined Bending And Torsion Load Cases Acting On The Horizontal C- Chanel. The Maximum Stress Is Obtained Due To Torsion Load Case. The Dynamic Analysis Of Truck Chassis Such As The Natural Frequency And Mode Shape Were Determined By Using Finite Element (Fe) Method. Weight Reduction Is Now The Main Issue In Automotive Industries. Traditionally, The Most Common Material For Manufacturing Vehicle Chassis Has Been Steel, In Various Forms. Over Time, Other Materials Have Come Into Use, The Majority Of Which Have Been Is Steel, Aluminum And Composite Materials. In This Paper The Dimensions Of An Existing Heavy Vehicle Chassis Of A Faw Dump Truck Vehicle Is Taken For Modeling And Analysis Of A Heavy Vehicle Chassis, And Traditional Materials Are Replaced With Composite Materials [Carbon Epoxy And E- Glass Epoxy] With The Same Geometry Subjected To The Same Pressure As That Of A Steel Chassis. From The Static Analysis It Is Obtained That Carbon Epoxy Has Relatively Higher Factor Of Safety Than Steel And E Glass Epoxy. By Using Composite Material For Chassis Frame It Is Possible To Reduce The Weight Up To 79.48% For Carbon Epoxy And 66.67% For E Glass Epoxy. From The Modal Analysis Taking The First Six Natural Frequencies, Carbon Epoxy Has Higher Natural Frequencies Ranges From 56.8hz To 134.8hz. The First Two Natural Frequencies Are In Engine Excitation Range But All The First Six Natural Frequencies Of E Glass Epoxy (27.22hz To 64.59hz) And Steel (31.97hz To 75.88hz) Lies In The Engine Excitation Frequency Range Of 13.33hz To 83.33hz. The Results Show That The Road Excitation Is The Main Disturbance To The Truck Chassis As The Chassis Natural Frequencies Lie Within Road Excitation Frequency. Carbon Epoxy Is The Best Material That Has Higher Strength To Weigh Ratio And Factor Of Safety With Less Vibration And Weight. Software?�?S Used In This Work Is Catia V5 R19 For Modeling And Ansys