Design and Numerical Analysis of a Spring Tire for Replacement of Inflatable part of Rubber Tire

Abstract

It Is Well Known That The Most Common Tires Are Pneumatic Tires, Which Are Complex Vehicle Components With Intricate Material Properties And Highly Non-Linear Behavior That Have A Significant Impact On Vehicle Handling. A Mixture Of Steel, Nylon, Polyester, And Rubber, It Takes The Form Of A Round Object And Is Responsible For Most Of The Vehicle's Tire Properties. The Drawback Of These New Tires Is, The Increased Hardness Of The Solidity Of Tires Makes Them Always Have Unstable, Vibrating, Shaky Rides Which Are Not Comfortable Like The Previous Pneumatic Ones.The Purpose Of This Thesis Is To Design And Perform Numerical Analysis Of Spring Tires That Can Replace Inflatable Pneumatics Tires. The Method Used In This Paper Is, A Specified Vehicle Tire Selected And The Model Developed By The 3d Modeling Software Ansys Space Claim And Analyzed With Dynamic Explicit Analysis Software Ansys Ls Dyna Software. A Comparison Was Made Between The Existing Model And The Modified Model. The Simulation Was Carried Out With Four Cases. The First Case (I) Of Analysis Is A Selection Of A Better Spring Model, Case (Ii) Of Analysis Is Recommended Number Of Springs On The Circumference Of The Tire, Case (Iii) Of Analysis Is Testing The Spring Tire Model Based On Different Material Properties, Case (Iv) Analyzing Recommended Spring Type, Spring Number, And Materials And Comparing With A Pneumatic Tire Which Has 33psiInternal Pressure. From Three Different Spring Type Wire Types, The Result Shows That Single Wire Spring Has A Good Energy Absorption Mode Which Is 28% Better Than Flat Spring And 4% Better Than C Section Cross Section Spring. There The Number Of Wire Springs Used Circumferential Radius On A Wheel Rim. The Percentage Of Mass Change Is Estimated By Adding The Number Of Sprigs Mass With Rubber And Wheel Rim. The Decided Number Of Springs For The Designed Spring Tire Model Is 100. The Decision Is Made By Comparing The Percentage Of Weight And Resilient Energy Change Of Arrayed Springs From Numerical Simulation Case Studies. From The Analysis Of50, 100, And 150 Numbers Of The Spring Model. The Third Case Analysis Carried Out Based On Material Properties Makes Ams 7233, Astm A 1000, Astm 303, And Inconel 718 Materials Are Rejected From The Case For They Have Big Dynamic Fluctuation Energy Loss And Large Deformation. From These Finally, The Selected Material For The Spring Tire Is Astm A231 For Its Good In Deformation Than Astm A 679. And The Selected Material Of The Proposed Spring Is Simulated With 100 Number Of Spring Shielded By The Original Tire Rubber And Their Deformation And Resilient Energy Is Compared With A Pneumatic Tire.