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ADAMS virtual prototype based Parametric Design

Home, and to establish the center position of the cylinder at the end of the end of the automatically generated no markers, shown in Figure 3. In the \parameters of the cylinder: the initiator (cylinder.MARKEI1) maintain POINT1 coincide, but the end of the cylinder end of the center is no longer coincides with the POINT_2. The length of the cylinder remains the same, not to achieve parametric, but the axis of the cylinder to maintain the connection point with the two structures coincide. Parameters for the realization of the length of the cylinder, the cylinder should be established across the length and structure of point coordinates as a function of. ADAMS software provides modeling functions DM (O1, 02) to return to the point of the distance between O1 and 02, so the length of the cylinder can be defined as the DM (POINT_1, POINT1), so the length of the cylinder to achieve the parameter Figure 4 cylinder with both ends of the center point of the modified structure to keep the two overlap. Figure 4 cylinder parameterized parameterized multi-link suspension geometry model of a typical suspension by the elastic element, guiding device, shock absorber and horizontal stabilizer and other components. Guides formed by the guide bar system determines the movement of the wheels relative to the body characteristics, and passes the vertical force of elastic element to pass a variety of other forces and moments. Horizontal stabilizer to reduce body roll when cornering driving angle and horizontal angle of vibration. In ADAMS / View environment built plane suspension model, first established coordinate system. When the vehicle on the road at the level when at rest, X-axis parallel to the ground point to the rear of the vehicle, Y-axis parallel to the ground point to the right of the driver, z-axis pointing up, left and right wheel coordinate origin at the midpoint. Figure 5 shows the parameters of the model after the multi-link suspension, suspension parts for the rules of the abstract and the cylinder rod geometry. According to Rod and 5 parameters of the multi-link suspension model parameterization cylinder parts, suspension parts, respectively, to establish that the geometric entities and the structure function expression between the points,[link widoczny dla zalogowanych], so that between the components and structural point association. We can see from the structure of the virtual prototype, because the composition of each component geometry of the prototype parameters, direction and location are achieved by the structure coordinates of points driven, so the designer as long as the \quick access to new virtual prototype model. Third, the virtual prototype simulation of suspension components relationship between the movement by adding motion pair, force, and other constraints described. In order to isolate the impact of the road wheels suffer from delivery to the body, in the suspension system of the Q guide rod, guide bar system and the body hinged at the commonly used rubber bushings, create a virtual prototype, the use of force and the moment the definition of component 6 The sleeve force (Fx, Fy, Fz, Tx, Ty, Tz) to describe such a flexible connection between the components. Elastic elements in tension and compression springs and shock absorbers use the definition of elastic damper stiffness and damping elements. Add all kinds of rigid and flexible constraints binding, the location of the constraint should be chosen to build the structure point to achieve the binding position and orientation of the parameterization,[link widoczny dla zalogowanych], each designer to modify the design parameters to avoid duplication when adding constraints. After completion of the addition of constraints, the original members formed a separate suspension system. As to maintain the correct angle to ensure that the vehicle wheel alignment straight, improve the vehicle's steering, automatic steering system to ensure the return, to avoid bearing damage due to the loss of accuracy when Shouli Bu, you can ensure close engagement with the ground tires to reduce tire wear ,[link widoczny dla zalogowanych], suspension wear and reduce fuel consumption, etc. Therefore, the suspension of the virtual simulation measurement is mainly to measure wheel alignment parameters. Figure 6 is a modified position of guide bar suspension after the absolute value of the different wheels side slip measurements. Figure 6 different design parameters of the simulation results IV Conclusion parameter modeling of virtual prototyping enables designers to quickly and flexibly modify the mechanical virtual prototyping,[link widoczny dla zalogowanych], enabling designers to analyze various parameters on the prototype performance,[link widoczny dla zalogowanych], so as to optimize the virtual prototype to provide very convenient and effective way. For some form of suspension and other basic products, parts, you can create parameters of the virtual prototype library. In the design of new products, designers can choose the library in the virtual prototype virtual prototype of the same structural type, point by modifying the design of institutions quickly create a simulation model designed for rapid analysis and optimization. This technique has been applied to science and technology in Zhejiang Province in tenders, \27)

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