What is an important characteristic of virtual models?

Virtual models are characterized primarily by their nature as computer-generated simulations. This means they are created using computer software to represent objects, systems, or processes in a visual format. These models allow for manipulation and testing of designs in a digital environment, enabling engineers and designers to visualize concepts before they are built physically.

The advantage of virtual models lies in their flexibility and the ability to explore variations quickly without the cost and time associated with physical prototypes. They can be viewed and modified on various devices, allowing for easier collaboration and dissemination of information among team members. This characteristic of being a simulation not only helps in design validation but also in predictive analysis, making it essential in engineering practices.

In contrast, physical and tangible models represent actual, solid objects, and are not the subject of this question. The concept of access is much broader than just laboratories; virtual models can be accessed anywhere there is software to view them. Additionally, while some manipulation might be necessary, extensive manual manipulation is not a defining trait of virtual models, as many can be adjusted easily through software interfaces.