Automotive Engineering: Automobile Structures and Materials

Explore static loads in automotive structures, covering weight, traction, centripetal, drag, and suspension loads, with stress analysis guiding design and material choices.

Learn how kerbweight, payload weight, and GWR shape weight distribution across chassis, engine, body, and drivetrain to influence safety and driving dynamics.

The suspension system absorbs road loads with springs, dampers, and control arms to keep tires in contact, improving traction, braking, stability, and longevity of the chassis.

Explore how centrifugal and cornering forces influence tire friction, center of gravity, normal force, and vehicle stability, and examine how banked tracks, centripetal force, and suspension tuning optimize safety.

Explore inertial forces and inertial loads from acceleration, deceleration, and sharp turns. See how chassis, materials, and suspension design distribute and absorb these stresses to protect structural integrity and safety.

Explore mechanical stress and its main types—tension, compression, shear, bending, and torsional stress—and how engineers balance strength and weight in automobile design through stress analysis and testing.

Explain tension forces and how stress over cross-sectional area governs material deformation in automotive structures. Use the Golden Gate Bridge's suspender cables as a concrete tension example.

Explore compression forces in automotive structures, comparing them to tension, and learn how compression stress, buckling, and slenderness ratios influence safety, material choice, and load bearing.

Explain bending as deformation under load, with compression and tension around the neutral axis, and how moment of inertia and the I-beam web and flanges resist bending.

This lecture explains shear stress as the force per area that causes sliding between layers, using a deck-of-cards analogy and introducing shear flow, first moment of area, and design implications.

Explore torsion stress and torque in automotive components, from drive shafts and steering columns to the chassis, and learn how cross-sectional geometry and polar moment of inertia influence torsional rigidity.

Explore chassis fundamentals, including definitions, rolling chassis, powertrain and drivetrain, and compare ladder frame, backbone, tubular (space frame), and monocoque designs with body-on-frame versus unibody concepts.

Explore body in white as car skeleton assembled from high strength steels, tailored blanks, bake hardening, press hardened steel, and dual phase steel to optimize strength, weight, and crash safety.

The unibody integrates the chassis and body, reducing weight and increasing rigidity. Load bearing is formed by the body, with crumple zones and carbon fiber enhancing safety and energy absorption.

Explore body on frame construction, mounting a separate frame to a platform for trucks and heavy-duty SUVs, delivering strength, durability, and maintenance ease while adding weight and reducing interior space.

Explore hinge joints and ball joints, including door hinges with bearings and lock striker plate, and suspension with double wishbones and spherical joints at wheel end shaping steering and ride.

Compare automotive materials by properties and performance, using uniaxial tests to generate stress-strain curves that quantify yield strength, ultimate strength, Young's modulus, and ductility.

Explore essential materials properties for automotive engineering, including Young's modulus and ductility. Assess hardness, including Vickers testing, resilience, toughness, corrosion resistance, machine ability, density, thermal expansion, and creep resistance.

Explore steel in automotive engineering, including dual phase, boron, and TRIP steels with high strength, ductility, and energy absorption for safety components and chassis.

Explore aluminium as a lightweight, corrosion-resistant automotive material. Review its alloys, such as 2024, 552, and 775, and manufacturing processes like casting, extrusion, rolling, forming, machining, and welding.

Explore magnesium's low density and high strength-to-weight ratio for lighter, fuel-efficient vehicles, including alloys 31B, MAM6OB, and e42 and their properties, applications, and casting, extrusion, and rolling manufacturing methods.

Titanium offers exceptional strength-to-weight ratio, heat resistance, and corrosion resistance for automotive components, with alloys like grade five, grade nine, and grade 23 used in engines, exhausts, and suspensions.

Explore composite materials, especially fiber reinforced polymers and carbon fiber reinforced polymers, and how fiber orientation, matrix choice, and lightweight design enhance automotive strength and efficiency.

Explore factors of safety as a margin that compares material yield and ultimate strength to design stress, with typical values around 1.5–2 and higher for critical aerospace components.

Explore failure theory to predict material performance under tension, compression, bending, shear, and torsion, using von Mises and Tresca criteria and uniaxial tests to guide safe, efficient aircraft design.

Explore factors of safety in automotive structures, linking yield and ultimate strengths to design stress, and account for fatigue, material variability, and environmental degradation to ensure safe, reliable vehicles.

Wrap up the automotive engineering course and reflect on your progress toward mastering the material. Explore courses on vehicle performance, how an engine works, forces and vehicle dynamics, transmission.