Professor Piaras Kelly's "Solid Mechanics Part II: Engineering Solid Mechanics" at the University of Auckland provides foundational, open-access course notes on small-strain theory and 2D elastostatics. The curriculum covers differential equations of motion, Airy stress functions, and introduces plasticity, including work-hardening and true stress-strain measures. Access the full course materials at University of Auckland . Solid Mechanics Part III
However, it is not for beginners. If you have not mastered basic beam bending ($M/I = \sigma/y = E/R$), start with Part I. But if you are ready to understand why an I-beam twists when you push it off-center, or how to calculate the deflection of a square shaft under torsion—download the legitimate PDF, print the chapters on shear centre and virtual work, and get ready to think like a professional stress analyst. solid mechanics part ii kelly pdf
Equations that ensure the strains within a body are physically consistent and relate to a single continuous displacement field. For students looking for the broader context, serves as an Introduction to Solid Mechanics Foundations and Material Models of Continuum Solid Mechanics, respectively. University of Auckland specific chapter Solid Mechanics Part III However, it is not for beginners