8 Template Builder Tutorial 141
8.1 Starting ADAMS/Car Template Builder 141
8.2 Creating Topology for Your Template 142
8.2.1 Creating a Template 142
8.2.2 Building Suspension Parts 143
8.2.3 Creating the Wheel Carrier 146
8.2.4 Creating the Strut 147
8.2.5 Creating the Damper 148
8.2.6 Defining the Spring 148
8.2.7 Creating the Tie Rod 149
8.2.8 Creating the Toe and Camber Variables 150
8.2.9 Creating the Hub 150
8.2.10 Creating and Defining Attachments and Parameters 151
8.3 Creating a Suspension Subsystem 156
9 Creating and Simulating Full Vehicles 159
9.1 A Full-Vehicle Assembly 159
9.2 Performing a Single Lane-Change Analysis 161
9.3 Performing a Step Steer Analysis 163
9.4 Performing a Quasi-Static Steady-State Cornering Analysis 164
9.5 Performing a Baseline ISO Lane-Change Analysis 164
9.6 Modifying the Full-Vehicle Assembly 165
APPENDIX A: ADAMS/View keyboard shortcuts 167
APPENDIX B: ADAMS/Car keyboard shortcuts 170
REFERENCES 172
SectionⅠ- adams/View
1 ADAMS/View Basics
ADAMS/View is a powerful modeling and simulating environment that lets you build, simulate, and refine models of mechanical systems.
1.1 Introducing ADAMS/View
ADAMS/View lets you build models of mechanical systems and simulate the full-motion behavior of the models. You can also use ADAMS/View to quickly analyze multiple design variations until you find the optimal design. This chapter introduces you to ADAMS/View. It includes the sections:
Steps in Modeling and Simulating
Build Your Model
Test and Validate Your Model
Refine Your Model and Iterate
Customize and Automate ADAMS/View
1.1.1 Steps in Modeling and Simulating
The steps that you use in ADAMS/View to create a model mirror the same steps that you would use to build a physical prototype. These steps are shown in Figure 1.
Although we’ve listed the steps that you perform to create a model as though you create the entire model at once and then test and refine it, we recommend that you build and test small elements or subsystems of your model before you build the entire model. For example, create a few modeling objects, connect them together, and then run a simple simulation to test their motion and ensure that you are connecting them correctly. Once these are modeled correctly, add more complexity to your model. By starting out slowly, you can ensure that each subsystem works before moving on to the next step. We call this the crawl-walk-run approach.
1.1.2 Build Your Model
You create your model in ADAMS/View by:
Creating the Parts of Your Model
Adding Constraints and Motions to Mandate Part Movements
Adding Forces that Induce or Resist Part Movements
Figure 1.1 Steps in Modeling and Simulating
Each of these processes is explained below.
Creating the Parts of Your Model
You start building your model by building the physical attributes of the movable elements (parts) in your mechanical system. You can build the geometry using:
ADAMS/View library of parts to create the simpler elements of your model.
ADAMS/Exchange to import CAD geometry and realistically view the behavior of your model.
Adding Constraints and Motions to Mandate Part Movements
Constraints define how parts are attached and how they are allowed to move relative to each other. ADAMS/View provides a library of constraints including:
Idealized joints that have a physical counterpart, such as a revolute (hinge) or translational joint (sliding dovetail).
Joint primitives that place a restriction on relative motion, such as the restriction that one part always moves parallel to another part.
Motions generators that drive your model through a prescribed distance, velocity, or acceleration as a function of time.
Associative constraints that define how pairs of constraints move, such a couplers or gears.
Two-dimensional curve constraints that define how a point or curve moves along another curve.
Adding Forces that Induce or Resist Part Movements
You can also apply forces that act on your model. These forces will affect part motion and reaction forces on constraints. ADAMS/View provides you with libraries of forces that include:
Flexible connectors, such as spring-dampers and bushings, those provide pre-defined, compliant force relationships.
Special forces, such as aerodynamic force, that provide pre-defined forces that are commonly encountered.
Applied forces that allow you to write your own equations to represent a wide variety of force relationships. To help you write force equations, we’ve provided a Function Builder, which steps you through writing a function and evaluates the function before adding it to your model.
Contacts that specify how bodies react when they come in contact with one another when the model is in motion.