Semester	Lectures + Exercises	Subject Designation
VI & VIII	2 + 1	18781

 

Subject Holder:

Prof. Dr. Sc. Ivica Smojver

Asst. Prof. Darko Ivančević

 

Objective:

Familiarization with the basic expressions and methods used in the mechanics of composite structures.

 

Description:

• Mechanical properties of fiber and matrix. Classification of composites. Types of reinforcement. Nomenclature.
• Fundamental equations of micromechanics. Rule of mixtures. Halpin-Tsai equations. Expressions based on theory of elasticity.
• Fundamental equations of macromechanics. Derivation of elasticity tensor symmetry.
• Elasticity matrix of an anisotropic, orthotropic, isotropic, transversally isotropic material.
• Transformation of mechanics properties - material system axes rotation.
• Constitutive equation of composite materials. Derivation of A, B, D matrices.
• Analysis of symmetric, anti-symmetric and other characteristic layering setups.
• Stresses and strains in layered composites.
• Thermal properties of composite phases. Thermal stresses in composites. Influence of manufacturing.
• Failure criteria. Maximum stress criterion. Maximum strain criterion. Tsai-Wu criterion. Tsai-Hill criterion. Hashin’s criterion.
• Firs-ply failure and last-ply failure criteria.
• Damage in composites. Fiber breakage. Matrix cracking. Pull out. Delaminations.
• Joints in composite structures.
• Examples of composite structures.

 

Teaching material:

Mechanics of Composite Materials (in Croatian) - web contribution

 

Additional References:

• Jones, R.M.: Mechanics of Composite Materials, Taylor and Francis, 1999
• Hyer, M. W.: Stress Analysis of Fiber Reinforced Composite Materials, McGraw – Hill, Boston, 1998
• Tsai, S. W.: Theory of Composites Design, Think Composites, Dayton, 1993
• Niu, M.C.Y., Composite Airframe Structures, Conmilt Press, 1992
• Middleton, D. H.: Composite Materials in Aircraft Structures, Longman Scientific & Technical, Harlow, 1990