T.H.G. Megson 
Aircraft Structures for Engineering Students [PDF ebook] 

Aircraft Structures for Engineering Students is the leading self contained aircraft structures course text. It covers all fundamental subjects, including elasticity, structural analysis, airworthiness and aeroelasticity. Now in its fourth edition, the author has revised and updated the text throughout and added new case study and worked example material to make the text even more accessible. — The leading Aircraft Structures text, covering a complete course from basic structural mechanics to finite element analysis- Enhanced pedagogy with additional case studies, worked examples and home work exercises