Study On Mechanism Characteristics In High-speed Tire Testing Machine

Tire experiment technology to tire industry development very important function. The tire testing machine simulation tire in the road surface travel effect and the tire actual operating mode's approximate degree is the tire experiment technological development key. The tire works the time standing under load situation to be more complex, on testing machine's tire is hanging the organization to be able realize to the tire each kind of movement posture simulation, simultaneously must approach the actual operating mode. The automobile high speed tire dynamic characteristic testing machine tests the automobile tire, in high speed (is smaller than 250km/h) under the condition each performance parameter test installation. This article summarized the tire experiment technology development condition, introduced the multimode system kinetic theory, carries on the simulation simulation based on the ADAMS software to tire's contact rate process, determined that the more appropriate organization plan carries on the control rule optimization.First, proposed that two kinds apply in the high speed tire testing machine's tire are hanging the organization, analyzes two kind of organizations separately the characteristics, and carries on the analysis to movement form differences between two kind of organization's. Two kind of plans in the side lurch movement and the side leaning movement, when maintains certain side lurch or the side leaning angle, the tire swinging centerline position is different. Therefore under two kind of organizations tire's movement posture possibly has the difference, what kind of organization's movement form can cause tire's movement posture to be closer the actual operating mode, is question which must further solve.Next, uses the ADAMS software separately carries on the suspension fork organization and two kinds of organizations the movement simulation. Obtains has the reference value contact path curve. Between the tire and the vehicles is connects through the suspension fork organization, selects the cross arm suspension fork organization to take the reference, two kind of plans, in the single side lurch movement, the one-sided leaning movement and the side mix under the movement at an angle the tire contact path and the suspension fork organization compare. Through to contacts path's comparison, the definite plan 2 simulation effects surpass the plan 1.Finally, the plan 2 organization load tire forms the contact path and under the suspension fork organization's path approximate degree waits for enhancing, carries on the optimization to the plan 2 organization's laws of motion. Take the side lurch, the side mix the movement as examples, tire's law of motion curve withdraws the splice function the suspension fork organization, joins the plan 2 organization simulation models as the actuation, after the simulation meets the true path and under the suspension fork organization contact path is more approximate. This time the side lurch, the side leaning cylinder's expansion quantity, the expansion speed rule curve may the generating function actuate the servo cylinder in the actual organization, causes the plan 2 organizations the simulation effects and the suspension fork organization is approximate, the optimized effect is more ideal.