Structural Mechanics of Optical Systems: November 7-8, 1983, Cambridge, MassachusettsLester M. Cohen |
From inside the book
Results 1-3 of 58
Page 7
... stress mode : ( quadratic stress ) Hybrid stress model with proper stress singularity Hybrid stress model ( cubic stress ) • Displacement model ( linear strain ) Displacement model ( constant strain ) 1/16 1/12 1/8 Mesh size / l 1/6 1/2 ...
... stress mode : ( quadratic stress ) Hybrid stress model with proper stress singularity Hybrid stress model ( cubic stress ) • Displacement model ( linear strain ) Displacement model ( constant strain ) 1/16 1/12 1/8 Mesh size / l 1/6 1/2 ...
Page 148
... stress singularity with equal to 0.801 . The solution predicts that all stress components are singular and that the traction free boundary condition is accommodated by amplitude functions for the re and ee components of stress which are ...
... stress singularity with equal to 0.801 . The solution predicts that all stress components are singular and that the traction free boundary condition is accommodated by amplitude functions for the re and ee components of stress which are ...
Page 183
... stress concentration in the dome . Because the dome material , Zinc Sulfide , is a brittle polycrystalline material , it has low ductibility and is weak when subjected to tensile stress . These characteristics make predicting and ...
... stress concentration in the dome . Because the dome material , Zinc Sulfide , is a brittle polycrystalline material , it has low ductibility and is weak when subjected to tensile stress . These characteristics make predicting and ...
Contents
OPTICAL SURFACE EVALUATION | 75 |
+74 45009 Structurally compatible surface vectors for wavefront aberration description D H Wilson Lockheed Missiles | 88 |
GENERAL TOPICS II | 109 |
Copyright | |
2 other sections not shown
Common terms and phrases
9-point Hindle mount actuator airbag algorithm analytical angle aspect ratio astigmatism beam boundary conditions calculated CALIFORN CALIFORNIA central difference central hole circular damping deformations delta-plate displacement distortion dome edge effect eigenvalues Engineering epoxy equations ERSITY finite element analysis finite element method finite element model flexures focal forces gradient graphite epoxy grid heat exchanger hexagon influence functions integration jitter error LIBRARY linear load located mesh mirror segment modal mode shapes modes motion NASTRAN natural frequency nodal node nonlinear numerical optical elements optical systems optimization orthogonal plate Poisson's ratio primary mirror problems r.m.s. deflection radial radius residual error ring SAN DIEGO shear shell shown in Figure shrinkage solution stability stiffness matrix stress Structural Dynamics Structural Mechanics support points surface symmetry telescope temperature thermal expansion thickness tube UNIV UNIVERSITY variations vectors wavefront whiffletrees Zernike coefficients Zernike polynomials