adams懸架性能分析

1、Adams/car的懸架分析（Suspension Analyses），共提供懸架38種性能。對所有懸架均提供： Aligning Torque - Steer and Camber Compliance /單位回正力矩的轉(zhuǎn)角或外傾角 Camber Angle /外傾角 Caster Angle /后傾角 Dive Braking/Lift Braking /制動點頭/制動抬頭 Fore-Aft Wheel Center Stiffness /懸架縱向剛度 Front-View Swing Arm Length and Angle /前視圖（虛擬）擺臂長度和角度 Kingpin Inclina

2、tion Angle /主銷內(nèi)傾角 Lateral Force - Deflection, Steer, and Camber Compliance / Lift/Squat Acceleration /抬頭（一般指啟動時前懸架抬升，后懸架壓縮） Percent Anti-Dive Braking/Percent Anti-Lift Braking /（前懸架）防點頭/（后懸架）防抬升 Percent Anti-Lift Acceleration/Percent Anti-Squat Acceleration / Ride Rate /懸架動剛度 Ride Steer /懸架轉(zhuǎn)向性能 Roll

3、 Camber Coefficient /側(cè)傾輪傾系數(shù)（車身側(cè)傾時車輪側(cè)傾角與車身側(cè)傾角的比值） Roll Caster Coefficient / Roll Center Location /側(cè)傾中心位置 Roll Steer /Ride steer is the slope of the steer angle versus the vertical wheel travel curve. Ride steer is the change in steer angle per unit of wheel center vertical deflection due to equal ver

4、tical forces at the wheel centers. Positive ride steer implies that the wheels steer to the right, as the wheel centers move upward. Side-View Angle / The side-view angle is the wheel carrier side-view rotation angle. It is positive for a clockwise rotation, as seen from the left side of the vehicle

5、. Side-View Swing Arm Length and Angle / The swing arm is an imaginary arm extending from the wheel's side elevation instant center of rotation to the wheel center. For front suspensions, the sign convention is that when the instant center is behind the wheel center, the swing arm has a positive

6、 length. For rear suspensions, the sign convention is the opposite: when the instant center is ahead of the wheel center, the swing arm has a positive length. The angle of the swing arm is the angle it makes to the horizontal. A positive angle for a positive length is when the arm slopes downward fr

7、om the wheel center. A positive angle for a negative length arm is when the arm slopes upward from the wheel center. Suspension Roll Rate /懸架側(cè)傾剛度 Toe Angle /前束角 Total Roll Rate /總側(cè)傾剛度 Wheel Rate /懸架剛度對轉(zhuǎn)向懸架還提供： Ackerman /Ackerman is the difference between the left and right wheel steer angles. A posi

8、tive Ackerman indicates that the right wheel is being steered more to the right than to the left. Ackerman Angle / Ackerman angle is the angle whose tangent is the wheel base divided by the turn radius. Ackerman angle is positive for right turns. Ackerman Error / Ackerman error is the difference bet

9、ween the steer angle and the ideal steer angle for Ackerman geometry. Because Adams/Car uses the inside wheel to compute the turn center, the Ackerman error for the inside wheel is zero. For a left turn, the left wheel is the inside wheel and the right wheel is the outside wheel. Conversely, for a r

10、ight turn, the right wheel is the inside wheel and the left wheel is the outside wheel. Positive Ackerman error indicates the actual steer angle is greater than the ideal steer angle or the actual is steered more to the right.  Caster Moment Arm (Mechanical Trail) / Caster moment arm is the dis

11、tance from the intersection of the kingpin (steer) axis and the road plane to the tire contact patch measured along the intersection of the wheel plane and road plane. Caster moment arm is positive when the intersection of the kingpin axis and road plane is forward of the tire contact patch. Ideal S

12、teer Angle / Ideal steer angle is the steer angle in radians that gives Ackerman steer geometry or 100% Ackerman. For Ackerman steer geometry, the wheel-center axes for all four wheels pass through the turn center. Note that Adams/Car uses the steer angle of the inside wheel to determine the turn ce

13、nter for Ackerman geometry. Therefore, the ideal steer angle and the steer angle are equal for the inside wheel. When making a left turn, the left wheel is the inside wheel. Conversely, when making a right turn, the right wheel is the inside wheel. A positive steer angle indicates a steer to the rig

14、ht. Outside Turn Diameter / Outside turn diameter is the diameter of the circle defined by a vehicle's outside front tire when the vehicle turns at low speeds. Adams/Car determines the circle by the tire's contact patch for a given steer angle. For a left turn, the right front wheel is the o

15、utside wheel. For a right turn, the left front wheel is the outside wheel. Percent Ackerman / Percent Ackerman is the ratio of actual Ackerman to ideal Ackerman expressed as a percentage. Percent Ackerman is limited to the range from -999% to 999%. Percent Ackerman is positive when the inside wheel&

16、#39;s steer angle is larger than the outside wheel's steer angle. Scrub Radius / Scrub radius is the distance from the intersection of the kingpin (steer) axis and the road plane to the tire contact patch measured along the projection of the wheel-center axis into the road plane. Scrub radius is

17、 positive when the intersection of the kingpin axis and the road plane is inboard of the tire contact patch. Steer Angle /Roll steer is the change in steer angle per unit change in roll angle, or the slope of the steer-angle-verses-roll-angle curve. Roll steer is positive when for increasing roll an

18、gle (left wheel moving up, right wheel moving down) the steer angle increases (wheels steer toward the left). Steer Axis Offset / The steer axis offset is the shortest distance from the steer (kingpin) axis to the wheel center. The steer axis offset is measured in the plane perpendicular to the steer axis and passing through the wheel center. The steer axis offset is always positive. The steer ax