OPTICast   UNIT 1: Overview of the Optimization Process UNIT 2: System Installation and System Considerations UNIT 3: Setting Up an Optimization Run UNIT 4: Selecting Geometric Design Variables UNIT 5: Creating Linked Geometric Design Variables UNIT 6: Putting Limits on Model Data UNIT 7: Setting Process Constraints UNIT 8: Setting the Objective Function UNIT

Back to OPTICast Menu   There are a number of things to take into consideration when running optimizations, as opposed to simply running a single simulation. These items are presented in this section, in Question and Answer format. QUESTION:  How do I get started?ANSWER: You need an initial casting/process design in SOLIDCast, just as if

Back to OPTICast Menu   While an optimization run is in progress, no operator involvement is necessary. When the run is complete, the system will bring you back to the SOLIDCast Main Window, just as if you had completed a regular simulation. At this point the Project Tree will have two sets of entries. The

Back to OPTICast Menu   Once you have set up the optimization run, selected variables, constraints and your objective, you are ready to run the optimization process. First of all, click OK on the Create/Edit Optimization Project window to close it. Highlight the optimization icon and click on the Optimization Menu. You can still edit

Back to OPTICast Menu   When creating or editing an Optimization Project, and you are on the Obj. Function Tab, one of the options is to set up Advanced Optimization Parameters. This is done by clicking on the Advanced… button, as shown below:     This will bring up a window with the Optimization Advanced

Back to OPTICast Menu   The Sim. Parameters Tab controls how a simulation will be run. Setting these parameters properly is important, because once an optimization run has started, there is no further operator intervention. If a simulation is run improperly, it will affect ALL simulations in the run.     You can choose between

Back to OPTICast Menu   The objective is the goal for the optimization process. It is the end result that you are trying to achieve. While you can have many constraints, you can have only one objective. That objective will be to minimize or maximize one of the eleven functions listed on the Obj. Function

Back to OPTICast Menu   Process constraints are the way in which the system can tell if it has made a ‘good’ or a ‘bad’ part. Any one or all of the 11 constraints listed in the figure below can be used in a given optimization run.     In this example, the Minimum Material

Back to OPTICast Menu   You may want to investigate variables that are process-related, rather than geometric in nature. For example, you may want to vary the pouring temperature or time, or perhaps the preheat temperature of an investment casting shell or permanent mold die. This is done using the Model Data Design Tab. A

Back to OPTICast Menu   If you have a model where a pattern of risers must be symmetrical, you can use the Linked Geometry feature to link additional risers to a defined Design Variable. This will allow multiple risers to vary in shape, while only the original riser will be defined as a Design Variable.For

Back to OPTICast Menu   Geometric design variables are those parts of the model that you will allow to change in size during the optimization process. The most obvious choice for this would be riser/feeder size, but could also include things such as gate size, or even a part of the casting geometry itself, if

Back to OPTICast Menu   Before an optimization run can be set up, you need to load a model. This is done by loading the project, then double-clicking the model name. The solid view of the model will then be displayed in the model building window.For example, the figure below shows a simple plate casting

Back to OPTICast Menu   Hardware   Minimum Requirements (SOLIDCast without OPTICast or FLOWCast, or for small mesh node counts) Intel Core 2 Duo E6300 or better, or AMD Athlon II or better 2 GB RAM 500GB Hard Drive Midrange ($200-$300) DirectX 9 or 10 compatible video card Windows XP Professional or Windows 7 Professional,

Back to OPTICast Menu   Solidification modeling, or computer simulation of the casting process, is being used by more and more foundries around the world to design the process for production of castings before castings are made or before equipment is built or altered. The primary objectives of using casting modeling are generally as follows: