MIL-HDBK-17-3F Volume 3.Foreword Table of Contents 5.7.1.6 Uniaxial and biaxial loading-plate with all sides simply supported... ..75 5.7.1.7 Uniaxial loading-plate with loaded edges simply supported and unloaded edges fixed.... 76 5.7.18 Stacking sequence effects in buckling.............. 76 5.7.2 Compressive postbuckling and crippling.................79 5.7.2.1 Analytical models.................. 86 5.7.22 Fatigue effects.… 88 5.7.2.3 Crippling curve determination... 89 5.7.2.4 Stiffener crippling strength determination...89 5.7.2.5 Effects of corner radii and fillets...92 5.7.2.6 Slenderness correction..... 93 5.78 Summary 93 5.8 CARPET PLOTS... .93 5.9 CREEP AND RELAXATION.............. 93 5.10 FATIGUE… .94 5.11 VIBRATION.... 94 5.11.1 Introduction........... 94 5.11.2 Stacking sequence effects........ 5.12 OTHER STRUCTURAL PROPERTIES................ .94 ..94 5.13 COMPUTER PROGRAMS.............. .94 5.14 CERTIFICATION REQUIREMENTS .94 CHAPTER 6 STRUCTURAL BEHAVIOR OF JOINTS..... 1 6.1 INTRODUCTION... 1 6.2 HESIVE J○lNTS.a. 6.2.1 Introduction...... 6.2.2 Joint design considerations... 3 6.2.2.1 Effects of adherend thickness:adherend failures vs.bond failures..… .3 6.2.2.2 Joint geometry effects.4 6.2.2.3 Effects of adherend stiffness unbalance...... 5 6.2.2.4 Effects of ductile adhesive response................. 5 6.2.2.5 Behavior of composite adherends.................7. 6.2.2.6 Effects of bond defects... .8 6.2.2.7 Durability of adhesive joints.......... 9 6.2.3 Stresses and structural behavior of adhesive joints.... 6.2.3.1 11 Gener..4.....…...11 6.2.3.2 Adhesive shear stresses.12 6.2.3.3 Peel stresses... 17 6.2.3.4 Single and double lap joints with uniform adherend thickness........................ 9 6.2.3.4.1 Joint behavior with elastic response of the bond layer.......................... 19 6.2.3.4.2 Thermal stress effects...29 6.2.3.4.3 Effect of ductility on joint stresses.................. .31 6.2.3.4.4 Transverse shear and stacking sequence effects in composite adherends… 34 6.2.3.5 Tapered and multi-step adherends..36 6.2.3.6 Finite element modeling 46 6.2.4 Mechanical response of adhesives..... .48 6.2.5 Mechanical response of composite adherends.... 49 6.2.6 Adhesive joint conclusions..... 。4444444444444444 49 6.3 MECHANICALLY FASTENED JOINTS....49 6.3.1ntr0 duction................ 49 6.3.2 Structural analysis. 49 6.3.2.1 Load sharing in a joint.......... .49 ixMIL-HDBK-17-3F Volume 3, Foreword / Table of Contents ix 5.7.1.6 Uniaxial and biaxial loading - plate with all sides simply supported......................................................................................................... 75 5.7.1.7 Uniaxial loading - plate with loaded edges simply supported and unloaded edges fixed....................................................................................... 76 5.7.1.8 Stacking sequence effects in buckling............................................................. 76 5.7.2 Compressive postbuckling and crippling ....................................................................... 79 5.7.2.1 Analytical models............................................................................................. 86 5.7.2.2 Fatigue effects ................................................................................................. 88 5.7.2.3 Crippling curve determination.......................................................................... 89 5.7.2.4 Stiffener crippling strength determination ........................................................ 89 5.7.2.5 Effects of corner radii and fillets....................................................................... 92 5.7.2.6 Slenderness correction.................................................................................... 93 5.7.3 Summary........................................................................................................................ 93 5.8 CARPET PLOTS...................................................................................................................... 93 5.9 CREEP AND RELAXATION..................................................................................................... 93 5.10 FATIGUE .................................................................................................................................. 94 5.11 VIBRATION .............................................................................................................................. 94 5.11.1 Introduction .................................................................................................................... 94 5.11.2 Stacking sequence effects ............................................................................................. 94 5.12 OTHER STRUCTURAL PROPERTIES ................................................................................... 94 5.13 COMPUTER PROGRAMS....................................................................................................... 94 5.14 CERTIFICATION REQUIREMENTS........................................................................................ 94 CHAPTER 6 STRUCTURAL BEHAVIOR OF JOINTS ........................................................................ 1 6.1 INTRODUCTION........................................................................................................................ 1 6.2 ADHESIVE JOINTS ................................................................................................................... 2 6.2.1 Introduction ...................................................................................................................... 2 6.2.2 Joint design considerations ............................................................................................. 3 6.2.2.1 Effects of adherend thickness: adherend failures vs. bond failures ............................................................................................................... 3 6.2.2.2 Joint geometry effects........................................................................................ 4 6.2.2.3 Effects of adherend stiffness unbalance............................................................ 5 6.2.2.4 Effects of ductile adhesive response ................................................................. 5 6.2.2.5 Behavior of composite adherends..................................................................... 7 6.2.2.6 Effects of bond defects ...................................................................................... 8 6.2.2.7 Durability of adhesive joints............................................................................... 9 6.2.3 Stresses and structural behavior of adhesive joints .......................................................11 6.2.3.1 General .............................................................................................................11 6.2.3.2 Adhesive shear stresses ................................................................................. 12 6.2.3.3 Peel stresses ................................................................................................... 17 6.2.3.4 Single and double lap joints with uniform adherend thickness........................ 19 6.2.3.4.1 Joint behavior with elastic response of the bond layer ......................... 19 6.2.3.4.2 Thermal stress effects........................................................................... 29 6.2.3.4.3 Effect of ductility on joint stresses......................................................... 31 6.2.3.4.4 Transverse shear and stacking sequence effects in composite adherends ............................................................................................. 34 6.2.3.5 Tapered and multi-step adherends.................................................................. 36 6.2.3.6 Finite element modeling .................................................................................. 46 6.2.4 Mechanical response of adhesives ............................................................................... 48 6.2.5 Mechanical response of composite adherends ............................................................. 49 6.2.6 Adhesive joint conclusions............................................................................................. 49 6.3 MECHANICALLY FASTENED JOINTS.................................................................................... 49 6.3.1 Introduction .................................................................................................................... 49 6.3.2 Structural analysis.......................................................................................................... 49 6.3.2.1 Load sharing in a joint...................................................................................... 49