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write down the different assumptions in simple theory of bending the
what is bending stressthe bending moment at section tends to bend or deflect beam and internal stresses resist its bending the process of bending
nominal strain and true strainnominal strain is ratio of change in length per initial length nominal strain change in length initial
axis of symmetryif in diagram half part of diagram is mirror image of next frac12 part then there is a symmetry in diagram the axis at which symmetry
radius of gyration kthe radius of gyration of given lamina about given axis is that distance from te given axis at which all the elemental parts of
nominal stress and true stressnominal stress is the ratio of force per initial cross sectional area original area of cross sectionnominal stress
theorem of parallel axisit states that if the mi of plane area about the axis passing through the cg can be denoted by ig the mi of area about any
explain youngs modulus or modulus of elasticitysol it is ratio between tensile stress and tensile strain or compressive stress and compressive
theorem of perpendicular axisit states that if ixx and iyy be the mi of plane section about the two mutually perpendicular axes meeting at a
state hooks lawsol it states that when material is loaded within the elastic limit the stress is proportional to strain produced by the stress this
elastic limitsol when external force acts on the body the body tends to undergo some deformation if external force is removed and body comes back to
area moment of inertiamoment of force about a point is product of the force f and perpendicular distance d between point and line of action of that
q explain the terms centre of gravity and centroidsol a point can be found out in a body through which resultant of all such parallel forces acts
type of strainthere are basically four type of strain1 tensile strain2 compressive strain3 volumetric strain4 shear
define strainsol straine when the body is subjected to some external force there is some change in dimension of body the ratio between change in the
define stresssol when body is acted upon by load or external force it undergoes deformation that is change in shape or dimension which increases
what is loadsol a load can be defined as the combined effect of external forces acting on the body the load is applied on body whereas stress is
scope of strength of materialswhat is the scope of strength of materialssol strength of materials is science that deals with the relations between
steps involved for method of sectionthe different steps involved are stated below1 first find out support reaction by using equilibrium conditions2
method of sectiondefine the method of section how can you solve the problems with the help of method of sectionsol this method is powerful method for
what is tracing error define how to track tracing
vickers hardness testthis test is alike the brinell test but uses different indenter a square based pyramid of cone angle 136 deg is used the applied
brinell hardness testinsert the ball of diameter d in ball holder of machine make specimen surface free from dust and dirtmake contact between the
specifications of hardness testing machines and indentorsthe brinel cum rockwell tester has specifications which are stated below ability to
determine hardness of materialhardness is surface property it can be defined as resistance of material against permanent deformation of surface in