Mechanical System Design

Fluid mechanics has a wide range of applications, including for mechanical engineering, geophysics, astrophysics, and biology. Solid mechanics deals with characterizing solid responses to the external forces and environments.

Successful design of mechanical systems requires four major disciplines (fluid mechanics, solid

mechanics, control engineering, and multidisciplinary design optimization). Fluid mechanics deals with

characterizing fluid flows around objects. Fluid mechanics has a wide range of applications, including for

mechanical engineering, geophysics, astrophysics, and biology. Solid mechanics deals with characterizing

solid responses to the external forces and environments. Solid mechanics studies the behavior of solid

materials, especially their motion and deformation under the action of forces, temperature changes,

phase changes, and other external or internal agents. Solid mechanics is fundamental for civil,

aerospace, nuclear, and mechanical engineering, for geology, and for many branches of physics such as

materials science. Control engineering is the engineering discipline that applies control theory to design

systems with desired behaviors. The practice uses sensors to measure the output performance of the

device being controlled and those measurements can be used to give feedback to the input actuators

that can make corrections toward desired performance. When a device is designed to perform without

the need of human inputs for correction it is called automatic control. Multi-disciplinary design

optimization (MDO) is a field of engineering that uses optimization methods to solve design problems

incorporating a number of disciplines. MDO allows designers to incorporate all relevant disciplines

simultaneously. The optimum of the simultaneous problem is superior to the design found by optimizing

each discipline sequentially, since it can exploit the interactions between the disciplines.