Fundamentals Of Aircraft Structural Analysis

by Curtis, Howard D.

• ISBN13: 9780256192605
• ISBN10: 025619260X
• Edition: 1st
• Format: Hardcover
• Copyright: 1996-10-01
• Publisher: McGraw-Hill Science/Engineering/Math

Summary

Fundamentals of Aircraft Structural Analysis focuses on the basics behind the elements of aircraft structural analysis using an applications-oriented approach. Through the use of extensive practical problems, Howard Curtis introduces your undergraduate students to the theory required for understanding linear, static structural behavior, and the classic methods of analysis. By focusing on the basics, students will comprehend each topic and be encouraged to study more advanced topics.

Table of Contents

Historical Perspective	1	(35)
Introduction	1	(1)
Survey of Developments in Aircraft Structures since 1903	2	(27)
Nature and Composition of Modern Aircraft Structures	29	(5)
Idealization of Aircraft Structures for Preliminary Analyses	34	(2)
Exercises	35	(1)
Statically Determinate Structures	36	(62)
Introduction	36	(2)
Plane Trusses	38	(6)
Space Trusses	44	(6)
Simple Beams	50	(6)
Stiffened Shear Webs	56	(10)
Idealized Beams: Torsional and Shear Loading	66	(11)
Frames	77	(21)
Exercises	85	(13)
Applies Elasticity: Fundamental Concepts	98	(90)
Introduction	99	(1)
Stress	99	(5)
Equilibrium	104	(3)
Stress Transformation	107	(2)
Principal Stress	109	(4)
Plane Stress	113	(5)
Strain	118	(7)
Normal Strain	120	(1)
Shear Strain	121	(4)
Volumetric Strain	125	(1)
Compatibility Conditions	126	(2)
Plane Strain	128	(3)
Stress-Strain Equations for Isotropic Elastic Materials	131	(4)
The Plane Stress Problem	135	(8)
Saint-Venant's Principle	143	(1)
Strain Energy	144	(5)
Static Failure Theories	149	(5)
Margin of Safety	154	(2)
Anisotropic Elastic Materials	156	(8)
Stress Concentration and Fatigue	164	(24)
Exercises	179	(9)
Box Beam Stress Analysis	188	(78)
Introduction	188	(1)
Area Moments of Inertia	189	(4)
Internal Force Sign Convention	193	(4)
Saint-Venant Torsion Theory	197	(7)
Bernoulli-Euler Flexure Theory	204	(3)
Isotropic Beam Flexure Stress	207	(4)
Thin-Walled Beam Shear Stress	211	(13)
Idealized Thin-Walled Sections	224	(12)
Tapered Idealized Beam Shear Flow	236	(30)
Exercises	254	(12)
Load Transfer in Stiffened Panel Structures	266	(35)
Introduction	266	(3)
Rib and Bulkhead Shear Flows	269	(13)
Shear Flow around Cut Outs	282	(3)
Box Beam Cutouts	285	(16)
Exercises	292	(9)
Work-Energy Principles	301	(27)
Introduction	301	(2)
System Equilibrium and Compatibility	303	(3)
The Virtual Work Principle	306	(5)
Minimum Potential Energy and Castigliano's First Theorem	311	(3)
Stiffness Matrix	314	(2)
The Complementary Virtual Work Principle	316	(3)
Minimum Complementary Potential Energy and Castigliano's Second Theorem	319	(3)
Flexibility Matrix	322	(6)
Exercises	324	(4)
Force Method: Trusses, Beams, and Frames	328	(81)
Introduction	328	(3)
Rods: Complementary Virtual Work	331	(1)
Truss Deflections Using Complementary Virtual Work	332	(3)
Statically Indeterminate Trusses	335	(15)
Simple Beams: Complementary Virtual Work	350	(4)
Torsion: Complementary Virtual Work	354	(1)
Beam and Frame Deflections Using Complementary Virtual Work	355	(7)
Statically Indeterminate Beams and Frames	362	(47)
Exercises	389	(20)
Force Method: Idealized Thin-Walled Structures	409	(86)
Introduction	409	(1)
Shear Panels and Stiffeners	410	(4)
Statically Indeterminate Stiffened Webs	414	(10)
Thin-Walled Beams	424	(4)
Deflections in Idealized Beams	428	(10)
Shear Center of Closed Sections	438	(2)
Warping Deflections	440	(7)
Multicell Idealized Box Beams	447	(16)
Restraint Effects in Idealized Box Beams	463	(4)
Shear Lag	467	(28)
Exercises	480	(15)
The Matrix Displacement Method	495	(61)
Introduction	496	(1)
Vector Notation	496	(1)
Matrix Notation	496	(1)
Basic Matrix Operations	497	(6)
Determinants and Matrix Inverse	503	(6)
Cramer's Rule	509	(2)
Gauss Elimination	511	(5)
The Eigenvalue Problem	516	(2)
Orthogonal Coordinate Transformations	518	(2)
Some General Aspects of the Stiffness Method	520	(20)
Constitutive Equations in Matrix Form	540	(2)
General Form of the Stiffness Equations Using Virtual Work	542	(14)
Exercises	550	(6)
Matrix Displacement Method: Trusses, Beams and Frames	556	(96)
Introduction	556	(1)
Rod Element Stiffness Equations	557	(27)
Beam Element Stiffness Equations	584	(18)
Two-Dimensional Frames	602	(11)
Torsional Element	613	(2)
Three-Dimensional Frames	615	(37)
Exercises	633	(19)
Matrix Displacement Method: Thin-Walled Structures	652	(62)
Introduction	652	(1)
The Rectangular Shear Panel	652	(16)
The Constant Strain Triangle	668	(21)
Analysis by Substructures	689	(25)
Exercises	698	(16)
Structural Stability	714	(77)
Introduction	714	(1)
Unstable Behavior	715	(6)
Beam Columns	721	(2)
Slender Column Buckling	723	(7)
Column Imperfections and Load Misalignment	730	(4)
Inelastic Column Buckling	734	(7)
Approximate Analysis Methods	741	(13)
Thin Plate Buckling	754	(4)
Crippling Stress	758	(12)
Shear Panel Stability	770	(2)
Complete Tension Field Beams	772	(11)
Static Wing Divergence	783	(8)
Exercises	787	(4)
Appendix: Comparative Mechanical Properties of Metal Alloys	791	(4)
Index	795