The kashida; TEXT-ALIGN: justify; TEXT-KASHIDA: 0%; TEXT-INDENT: 18pt; MARGIN: 0cm 0cm 0pt; unicode-bidi: embed; DIRECTION: ltr; mso-pagination: widow-orphan" In the present study, design, analysis and optimization of dynamics subsystems is specifically attended to, based on the basic platform that is specified for this car. The front and rear suspension systems along with steering system are designed and analyzed from the mechanism perspective. By investigating similar car designs, the Macpherson strut mechanism is used for front suspension system and twist beam mechanism is selected for the rear suspension system. In this stage, after analyzing the design of suspension system from vibration and mechanism point of view, its optimization for ride quality and mechanism geometry (including roll center height and key parameters related to wheel alignment and steer axis geometry) are performed. Also, by selecting rack and pinion mechanism for the vehicle steering system, design optimization has been done for steering geometry of wheels, behavior of the steering mechanism in roll steer phenomenon and other details. It is worth noting in the electric powertrain type of this platform, significant weight increase and change in the position of the center of mass occurs compared to ICE powertrain type. Necessary measures have been taken for modifying the dynamic behaviour of vehicle with minimal changes in the dynamical subsystems and with the approach of maintaining a common platform. In this project, CATIA, ADAMS/Car and ADAMS/Insight software are widely used. CATIA has been used in the field of CAD. Also dynamical modelling of this car is done in ADAMS/Car. The design, execution and analysis of the experiments along with cost functions modelling and optimization are performed in the ADAMS/Insight software. By using ADAMS/Car, different tests such as suspension travel, steering, four-post with random road profile, constant radius cornering, lane change, etc. are simulated. Also, optimization process is performed by different approaches such as ride and handling using full factorial DOE and formation of response surface in ADAMS/Insight linked with ADAMS/Car. Integration of design, analysis and optimization processes in the field of vehicle dynamics can be considered as one of the innovations of the presented study. In the domestic car market, none of the three national brands own a native kashida; TEXT-ALIGN: justify; TEXT-KASHIDA: 0%; TEXT-INDENT: 18pt; MARGIN: 0cm 0cm 0pt; unicode-bidi: embed; DIRECTION: ltr; mso-pagination: widow-orphan" Key Words ltr"
