What is parametric design? Parametric design is guided by a set of parameters and rules defined by the engineer that generate or control the design output. It takes efficiency and possibilities one step further than traditional 3D modeling, in which objects are inserted and modified manually. Used in a variety of structures ranging from standard to complex, the concept allows for a wholly dynamic design process.
A model based on parameters and logical rules
The rules of a parametric design are often based on algorithms, in which case we can also talk about algorithmic design. The approach is very different from 2D CAD or traditional 3D modeling, where all elements need to be individually defined and added. You input a set of parameters, such as distance, angle, height, point in space or surface into the software and add a set of logical rules for the parameters. The algorithms then calculate values, creating a visual representation of your design based on the output of the calculations.
The system challenges less-automated design techniques. Instead of manually modeling a hundred beams, you can use parametric design to define the dimensions and relationships between the beams. The set rules can then generate all the beams in the model for you based on your input parameters. The entire design can be modified later on and the model adapts to the changes according to the logic, rather than having to change individual items.
A comprehensive approach to design
In parametric design, software takes on a more active role. This doesn’t replace engineers, however, as their role is to define the logical setup. In fact, parametric design gives the engineer more leverage and possibilities by providing an entirely new approach where the design is constantly viewed as a whole. Because manual work is reduced and the model is created as an entity, more time can be spent on the design itself rather than tweaking individual parts. Thus, design quality becomes better, and there’s less potential for human error.
