Method for extracting medial surface of model for simulating function of molded product together with an attribute on thickness thereof and computer record media in which program for carrying out extracting medial surface of model for simulating function of molded product with an attribute on thickness thereof is written

摘要

PURPOSE: A method for extracting a neutral surface of a model for a product interpretation is provided to automate to extract a neutral surface of the model for a product interpretation and supply a thickness attribute automatically. CONSTITUTION: Configuration information(three-dimensional CAD information) of a product is read as a model creation program for a product interpretation through a standard compatible format such as a direct interface, an IGES(Initial Graphics Exchange Specification), or an STEP(Standard for The Exchange of Product model data)(S1). If the configuration information has a loss(S2), a configuration error being generated in transmitting data is modified. If a direction of a curved surface has an error, the error is modified automatically(S3). An extraction surface is automatically created from the configuration information(S4). At this time, thickness information for deciding a thickness of the extraction surface is automatically calculated. A boss or rib surface for reinforcing a specific portion of the product is automatically connected to the extraction surface, and a neutral surface is automatically created(S5). A classified non-extracted surface is removed through a program command for creating a model for a product interpretation(S6), and a neutral surface for the interpretation is extracted. A finite element having a designated size is created on each neutral surface, and the model for interpreting a product is completed(S7).