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1 write those terms that are equal to zero in the constitutive equations a b and d for the following special laminatesa
1 indicate whether the following are continuous or discontinuous functions through the thickness also indicate why some
given epsilon0x epsilon0y gamma0xy 0 and kappaxnbsp 10 m-1nbsp kappaynbsp 05 m-1nbsp kappaxynbsp 025 m-1nbsp compute
compute the stresses laminate coordinates at z -127 mm using the results of exercise 1 note that theta 30degexercise
compute the curvature of the bimetallic in given exercise when it is subjected to a change of temperature t 10
for each of the following laminates specify the laminate type note that a laminate may have more than one
determine the frp area and the bending strength corresponding to the balanced strengthening configuration for the
determine the factored moment capacity emptymnnbspof the rectangular section subjected to interior environmental
consider a box-beam with constant area a and variable depth h width b and thickness ta derive an expression for the
redesign the box-beam of example 1 and 2 to make better use of the material ie changing the geometry of the
1 select a material laminate stacking sequence and thickness to carry a uniformly distributed load p 172 kp a the
repeat the computations of exercise 1 for various values of gamma between gamma 0 and gamma 1 keeping alpha beta 1
design a panel of length a 2 m along x width b 15 m stiffened along the length with 5 blade stiffeners spaced at 25
optimize the cylindrical tank of given example for minimum weight by changing the laminate configuration but not the
determine the euler buckling load of a column clamped at the base and free at the loaded end the column has the same
consider a laminate plusmn45 of the following materiale1 1378 gpae2 10 gpag12 5236 gpav12 03f1t 8268 mpaf1c 4823
re compute given exercise adjusting for in-situ strength assuming the transition thickness for this material is ttnbsp
consider a 045-45s laminate subject to a load nxnbsp nynbsp 1000 nmm compute the a and d matrices neglect shear
using the results for the intact laminate in given exercise computea the strains epsilonx epsilony gammaxy at the
using the stresses found in exercise 1 evaluate the strength ratio rf p f on top and bottom of each lamina using the
re-compute exercise 1 for loading beyond first ply failure fpf simulate the damaged material by using a damage factor d
consider a plusmn45 laminate with the same material properties of exercise 1 determine the value of the forces nx ny
if all the forces determined in exercise 1 are increased proportionally use the interacting criterion to determine a
re-compute given example when the lamina is subjected to sigma2nbsp -90 mp a sigma6nbsp 90 mp aexampledesign a
re-design the structure in given example avoiding thick clusters of plies and taking into account in-situ strength use