Oct 31, 2016 -- The use of
3D solid modeling and visualization tools is very much common today by design engineers to clearly understand the design intent of the product they have conceptualized and sent it for actual production. These 3D models that represent the physical object are developed using points in a 3D space which are connected through geometric entities like triangles, lines or curved surfaces. 3D models are useful to communicate design information to suppliers and manufacturers, and enable them to develop products with accuracy. However, these tools are often underutilized by designers. 3D models can be utilized to study the structural integrity of the design right from the early stages. This will enable creating accurate prototype which can be turned into a production part easily.
Representing a 3D Model
3D models are represented using three common methods:
Polygonal Modeling: This type of modeling involves points in 3D space connected using lines to form polygonal mesh. This is the most commonly used methods to develop 3D models because of the flexibility and speed of rendering. The only problem with polygonal modeling is that polygons are planar, hence curved surfaces can only be defined by approximation using number of polygons.
Curve Modeling: In this method, surfaces are defined through curves that are influenced by weighted control points. While the curve follows the points it will not necessarily interpolate, and the point weight will pull the curve closer to it.
Digital sculpting: There are three types of digital sculpting: displacement, volumetric and dynamic tessellation. While displacement type is the most commonly used, volumetric type is similar to displacement but is based on Voxels which does not suffer from polygon stretching. Dynamic tessellation divides the surface by triangulation and maintains a smooth surface to ensure finer details in the model.
3D Exploded Model of an Industrial Gas Burner Developed in SOLIDWORKS
These methods enable the development of a model which can then be utilized to create a prototype using 3D printing techniques. 3D modeling thus shortens the design time and enables manufacturers to streamline the manufacturing processes. It allows them to expedite production through clear design communication and subsequently enables them to bring quality products to the market faster at reduced costs.
TrueCADD is an engineering division of Hi-Tech iSolutions LLP and provides support to product manufacturers in the engineering design development processes. With solid modeling capabilities like SOLIDWORKS, Inventor, Creo and SolidEdge, we integrate our expertise and experience to efficiently conceptualize, design and manufacture quality products.
About Author: Gaurang Trivedi is Engineering consultant at TrueCADD. He has applied his engineering expertise across several highly complex and big scale projects, consequently managing to flawlessly deliver as per the client requirements.