دراسة وحساب البارامترات الموثرة على حركة السيارة، وتماسك العجلات مع سطح الطريق

At present time the cars manufacturing increase the compatibility with the maximum demand on passengers and load transmission, the manufacturing companies involved to make the stability and smooth cars movement available and the ability of it’s orientation in properdirection in various circumstances and systems to invest the same. The direction and suspensions systems are playing the main role to achieve these requirement , Hence, the research purposed to put a way for choosing the optimal characteristics of suspensions systems and studying the reaction on the car wheels. This paper shows that the proportion of elastic and slowdown of elements in suspensions systems own a big role in reducing the happening vibrations which saving the wheels steady on road surface, and it’s show also that the increasing of impact forces relevant to direct the driver by the wheels leading into creating turning moments of the car around it’s axis, particularly when the breaking process of wheels is not regular.