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The Halpin-Tsai Equations: A Review
Viewed 843 times since Wed, Aug 8, 2012
The Halpin-Tsai equations are based upon the "self-consistent micromechanics method” developed by Hill. Hermans eniplovetf this model to obtain a solution in terms of Hill’s "reduced moduli”. Halpin and ’Tsai have reduced Hernians... Read More
Summary of Useful Equations
Viewed 318 times since Sun, Mar 18, 2012
Summary of Useful Equations Read More
Stress and Strain MAE 314 – Solid Mechanics
Viewed 321 times since Sat, Apr 19, 2014
A material is said to behave elastically if the strain caused by the application of load disappear when the load is removed – it returns to its original state. The largest value of stress for which the material behaves elastically is called the... Read More
Viewed 235 times since Tue, Jun 2, 2015
This report is the result of a combined in-house and contract effort. Under Project 1467, "Structural Analysis Methods" and Task 146702 "Thermoelastic Stress.Analysis Methods" an in-house effort collected and categorized available analysis and design... Read More
Stiffness and Vibration Characteristics of SMA-ER3 Composites with Shape Memory Alloy Short Fibers
Viewed 238 times since Fri, Apr 26, 2013
Shape memory alloys (SMAs) possess both sensing and actuating functions due to their shape memory effect, pseudo-elasticity, high damping capability and other remarkable characteristics. Combining the unique properties of SMAs with other materials... Read More
Stiffness and Deflection Analysis of Complex Structures
Viewed 2605 times since Fri, Apr 26, 2013
A method is developed for calculating stiffness influence coefficients of complex shell-type structures. The object is to provide a method that will yield structural data of sufficient accuracy to be adequate for subsequent dynamic and aeroelastic... Read More
Viewed 236 times since Fri, Apr 26, 2013
In the study of statics we are concerned with two fundamental quantities: length or distance, which requires no explanation, and force. The quantity length can be seen with the eye but with force, the only thing that is ever seen is its effect. We... Read More
St. Venant Torsion Theory
Viewed 340 times since Mon, Sep 17, 2012
Assume the following geometrical behavior: a) Each cross-section (@ each z) rotates as a rigid body (No "distortion” of cross-section shape in x, y) b) Rate of twist, k = constant c) Cross-sections are free to warp in the z-direction but the This... Read More
Solid Mechanics
Viewed 303 times since Thu, Jun 7, 2012
The substantial discipline that is called mechanics of continua is divided into solid mechanics and fluid mechanics. In solid mechanics, one central topic is the theory of elasticity, which implies a narrowing of the scope to consider only materials... Read More
Shear Forces and Bending Moments in Beams
Viewed 285 times since Thu, Jun 7, 2012
When a beam is loaded by forces or couples, internal stresses and strains are created. To determine these stresses and strains, we first must find the internal forces and couples that act on cross sections of the beam.  Read More
Rigid Body Statics
Viewed 240 times since Mon, Dec 10, 2012
Statics is concerned with equilibrium of bodies at rest. Rigid body statics, in contrast with solid mechanics and structural analysis, neglect deformations of the body. Newton’s first and third laws provide the basis for the equilibrium... Read More
Rigid Body Dynamics
Viewed 252 times since Mon, Dec 10, 2012
While structural dynamics is described in a structural analysis document, the fundamentals of moving and undeformable bodies are outlined here. Read More
Lightning Direct Effects Handbook
Viewed 252 times since Sat, Apr 13, 2013
This handbook is intended to assist aircraft design and certification engineers in protecting small personal aircraft against the direct effects of lightning strikes. It is also  intended to assist Federal Aviation Administration (FAA)... Read More
Fastener Design Manual
Viewed 265 times since Sat, Apr 13, 2013
This manual was written for design engineers to enable them to choose appropriate fasteners for their designs. Subject matter includes fastener material selection, platings, lubricants, corrosion, locking methods, washers, inserts, thread types and... Read More
Conversion Factors
Viewed 321 times since Tue, Sep 6, 2011
Conversion Factors Read More
Viewed 318 times since Tue, Nov 8, 2011
The main objectives of this standard is to: — serve as a basic philosophy and standard — provide an internationally acceptable standard for safe design with respect to strength and performance by defining minimum requirements... Read More
Classification of Steels
Viewed 304 times since Tue, Nov 8, 2011
The Society of Automotive Engineers (SAE) has established standards for specific analysis of steels. In the 10XX series, the first digit indicates a plain carbon steel. The second digit indicates a modification in the alloys. 10XX... Read More
Cherrymax Rivet Manual
Viewed 310 times since Tue, Nov 8, 2011
Aerospace Fastners Read More
Basic concepts and equations of solid mechanics
Viewed 412 times since Tue, Sep 20, 2011
This paper provides a brief overview of the basic concepts and equations that will be used by other papers in the special issue on Damage and Fracture in Geomaterials. The first section introduces the tensorial notation, defines the basic... Read More
Advanced Airframe Structural Materials- A Primer and Cost Estimating Methodology
Viewed 352 times since Sat, Sep 24, 2011
This report identifies describes and quantifies the cost effects of structural materials that are likely to be incorporated into aircraft becoming operational in the 1990s.  Read More