Engineering mechanics pdf 1st year notes pdf download. Types of motion i translation and rotation i plane motion motion this video explains types of motion of a body like. Download citation introduction to solid mechanics this expanded second. Mechanics of solids pdf notes mos pdf notes smartzworld. 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. Deformable bodies are subjected to two kinds of forces, namely, contact. In this post, you are going to learn about types of force in detail. Proceeding from first principles to applications, the book stands as a whole. A normal in mathematics is a line perpendicular to a planar curve or surface. Bower, strength and fracture of engineering solids by david k. Normal n, f n the force between two solids in contact that prevents them from occupying the same space. Forces act at same point forces act at different point triangle law.
Gravitational forces, electric forces, magnetic forces, nuclear forces, frictional forces are some examples of forces. Weight weight is a force caused on earth by the gravitational attraction of a mass to the earths centre. Thus the ideal models of the type discussed in this section, and in much of this book, are. The force of air resistance is often observed to oppose the motion of an object. Basically, there are two types of forces, contact forces, and noncontact forces. The normal force is directed perpendicular to the surface.
As we know that in mechanics of deformable solids, externally applied forces acts on. Forces that you encounter in mechanics are often referred to as mechanical forces. 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. Lecture 8 torsion of solid circular shafts, twisting moment. Types of motion i motion i translation and rotation i.
Numerical examples lecture 9 strength of solid and hollow circular shafts. To illustrate the use of different kinematic formulations we will consider a. Solid mechanics is now not only for the analysis of hard tissue such as bones and cartilages. The air resistance is a special type of frictional force that acts upon objects as they travel through the air. An exception to this was the varying stress field in the loaded beam, but there a simplified set of elasticity equations was used. Strain energy resilience gradual, sudden, impact and shock loadings. Static or force boundary conditions have the form of eqs. All real materials undergo some deformation under the influence of forces. Module 3 lecture 1 shear force and bending moment diagram. 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. Force is the external agent that produces motion or tends to produce motion or it stops motion or tends to stop motion. Lecture 10 strength of shafts in combined bending and twisting. How many different types of forces and their examples. Our next objective is to outline the mathematical formulas that describe internal and external forces acting on a solid.
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