Lecture 8 torsion of solid circular shafts, twisting moment. Proceeding from first principles to applications, the book stands as a whole. Normal n, f n the force between two solids in contact that prevents them from occupying the same space. Our next objective is to outline the mathematical formulas that describe internal and external forces acting on a solid. Types of motion i translation and rotation i plane motion motion this video explains types of motion of a body like. Types of motion i motion i translation and rotation i. Engineering mechanics pdf 1st year notes pdf download.
Forces act at same point forces act at different point triangle law. Static or force boundary conditions have the form of eqs. As we know that in mechanics of deformable solids, externally applied forces acts on. Mechanics of solids pdf notes mos pdf notes smartzworld. Deformable bodies are subjected to two kinds of forces, namely, contact. Basically, there are two types of forces, contact forces, and noncontact forces. Gravitational forces, electric forces, magnetic forces, nuclear forces, frictional forces are some examples of forces. Lecture 10 strength of shafts in combined bending and twisting. Strain energy resilience gradual, sudden, impact and shock loadings. Force is the external agent that produces motion or tends to produce motion or it stops motion or tends to stop motion.
A normal in mathematics is a line perpendicular to a planar curve or surface. Solid mechanics is now not only for the analysis of hard tissue such as bones and cartilages. The normal force is directed perpendicular to the surface. An exception to this was the varying stress field in the loaded beam, but there a simplified set of elasticity equations was used. Weight weight is a force caused on earth by the gravitational attraction of a mass to the earths centre.
To illustrate the use of different kinematic formulations we will consider a. Numerical examples lecture 9 strength of solid and hollow circular shafts. How many different types of forces and their examples. Forces that you encounter in mechanics are often referred to as mechanical forces. Download citation introduction to solid mechanics this expanded second. Solid mechanics, also known as mechanics of solids, is the branch of continuum mechanics that 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, also known as mechanics of solids, is the branch of continuum mechanics that studies the behavior of solid materials, especially their motion and deformation under the action of forces, temperature changes, phase changes. Introduction units and dimensions laws of mechanics lamis theorem, parallelogram and triangular law of forces vectorial representation of forces vector operations of forces additions, subtraction, dot product, cross product coplanar forces rectangular components equilibrium of a particle forces in space equilibrium of a particle in space equivalent systems of forces principle of transmissibility. Bower, strength and fracture of engineering solids by david k.
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