JNTUK R20 B.Tech Mechanical 3-1 DMM – I Material/ Notes PDF Download

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JNTUK R20 B.Tech Mechanical 3-1 DMM – I Material/ Notes PDF Download: JNTUK R20 B.Tech Mechanical 3-1 DMM – I Material provides comprehensive study resources for Design of Machine Members (DMM). It covers various aspects including materials and their properties, manufacturing considerations, and the strength of machine elements. With this material, students learn to design components such as riveted and welded joints, keys, cotters, knuckle joints, shafts, shaft couplings, and mechanical springs.

The JNTUK R20 B.Tech Mechanical 3-1 DMM – I Notes offers both theoretical knowledge and practical applications, helping students understand the fundamentals and apply them effectively. It’s available for easy download in PDF format, making it convenient for students to access and study.

JNTUK R20 B.Tech Mechanical 3-1 DMM – I Material – Units

Unit 1 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical DMM – I Material

Introduction: General considerations in the design of Engineering Materials and their properties – selection –Manufacturing consideration in design–BIS codes of steels.

Stresses In Machine Members: Simple stresses – combined stresses – torsional and bending stresses – impact stresses – stress-strain relation – various theories of failure – factor of safety – design for strength and rigidity – preferred numbers. the concept of stiffness in tension, bending, torsion, and combined situations – static strength design based on fracture toughness.

Unit 2 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical DMM – I Material

Strength Of Machine Elements: Stress concentration – theoretical stress concentration factor – fatigue stress concentration factor notch sensitivity – design for fluctuating stresses – endurance limit – estimation of endurance strength – goodman’s line – Soderberg’s line – modified Goodman’s line, Gerber’s parabola.

Unit 3 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical DMM – I Material

Riveted And Welded Joints: design of joints with initial stresses – eccentric loading.

Bolted joints – design of bolts with pre-stresses – design of joints under eccentric loading – locking devices – bolts of uniform strength.

Keys, Cotters, and Knuckle Joints: Design of keys-stresses in keys-cotter joints- spigot and socket, sleeve and cotter, jib and cotter joints- knuckle joints.

Unit 4 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical DMM – I Material

Shafts: Design of solid and hollow shafts for strength and rigidity – design of shafts for combined bending and axial loads – shaft sizes – BIS code- Use of internal and external circlips- gaskets and seals (stationary & rotary).

Shaft Coupling: Rigid couplings – muff, split muff, and flange couplings, flexible couplings – flange coupling (modified).

Unit 5 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical DMM – I Material

Mechanical Springs: Stresses and deflections of helical springs – extension -compression springs – springs for fatigue loading, energy storage capacity – helical torsion springs – co-axial springs, leaf springs.

JNTUK R20 B.Tech DMM – I Material – Outcomes

• Assess materials and their properties, considering manufacturing factors.
• Understand the strength of machine elements.
• Apply knowledge to design riveted and welded joints, keys, cotters, and knuckle joints.
• Apply knowledge to design shafts and shaft couplings.
• Apply knowledge to design mechanical springs.

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