Bachelor of technology from IIT-Patna | Cracked GATE | Passion for Teaching

Rajashekar Janjarla

In this course I will cover each and every concept in Design of Machine Elements useful for  GATE and all other engineering examinations for students from Mechanical engineering department. I will also explain the tactics behind solving numerical problems and previous year question papers.

GATE (Graduate Aptitude Test in Engineering) 2020 & 2021 complete preparation with best educators. Know about the detailed syllabus, best books, exam pattern and dates, previous year question papers a

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English

Part 1: Design Of Machine Elements

Static And Fluctuating Load

Design of Machine Elements

Mechanical Engineering

GATE & ESE - ME & CH

GATE, ESE and IIT-JAM

Ace the toughest competitive and government exams in India 

Test Preparation

Introduction and importance of design in Machine elements and every structure by some examples and little overview of the basic concepts in Design of Machine elements Course.

Design Of Machine Elements

Course overview for Design of Machine elements part 1

Course Overview: Design Of Machine Elements Part 1

Design Categories,Static strength and Static loading ,Stress concentration,Theories of failure for ductile and brittle materials under static loading.

Failure Theories

Maximum Shear Stress (MSS) Theory

Distortion energy theory origin and mathematical formulation.

Distortion Energy (DE) Theory

Distortion energy theory for plane stress Distortion energy theory for three dimensional stress state Shear yield strength value according to distortion energy theory.

Distortion Energy (DE) Theory for Different Stress States

Using DE and MSS theories in solving an example problem to find factor of safety.

Example Problems in DE and MSS Theories

Coloumb-Mohr Theory

Coloumb Mohr theory for plane stress. Torsional yield strength and Example problem in Coloumb mohr theory.

Coloumb-Mohr Theory for Plane Stress

Revising Distortion energy theory,Maximum Shear stress theory and Coloumb Mohr Theory. Procedure to solve a problem including theories of failure With the help of an example problem.

Failure of Ductile Materials summary

Failure Theories for Ductile Materials.
Maximum Normal Stress Theory,Modified Mohr theory and the flow chart for selection of failure criteria.

Maximum-Normal Stress Theory for Brittle Materials

Quasi static fracture and modes of crack propagation,fracture toughness and stress intensity factor.

Introduction to Fracture Mechanics

Introduction and approach to fatigue failure

Fatigue Failure Resulting from Variable Loading

Fatigue Life Methods

Endurance limit ,Endurance limit modification factors and the surface condition modification factor.

Endurance Limit and its Modification Factors

The size modification factor,the load modification factor and the temperature modification factor.

Endurance Limit Modification Factors

Reliability modification factor and miscellaneous-effect modification factors.

Endurance limit Modification Factors Part 2

Stress concentration and Notch sensitivity

Fatigue Stress Concentration Factor and Notch Sensitivity

Calculation of number of cycles at which fatigue failure occurs

Number of Cycles required to Fatigue Failure

Characterizing fluctuating stresses

Modified Goodman criteria,Sodenberg Criteria ,Langer yielding Criteria and ASME elliptic Criteria of failure of mechanical elements under fluctuating loadings.

Fatigue Failure Criteria for Fluctuating Stresses

Example problem in which application of deflections of beams and theories of failure will be used.

Example Problem on Fatigue Failure criteria

Introduction to design of shafts and materials and type of loading on shafts

Introduction to Design of Shafts

Procedure to find the factor of safety and the safe diameter of the shafts using theories of failure

Design of Shafts for Stresses

Example Problem On Design of Shafts for Stresses

Basic standards and terminologies for screws

Screws,fasteners and the design of Non permanent joints

Torques required to raise the load and lower the load .Self locking condition.

Power Screw Mechanics

Efficiency  of power screws ,collar friction torque and screw body stresses

Efficiency of Power Screws and Collar Friction Torque

Nominal Thread Stresses

Example Problem on Design of Screws

Threaded Fasteners

Fastener Stiffness and the systematic procedure to find the Fastener Stiffness

Joints - Fastener Stiffness

Member stiffness for hexagonal bolted joint and general case of joints.

Member Stiffness

Example Problem On Member Stiffness of a Joint

External load on the joint,stiffness of the joint ,formula for the loaf on the bolt and the load on the members in the joint.

Statically Loaded Tension Joint with Preload

Factor of safety guards against yielding,factor of safety that guards against overloading and the factor of safety that guards against separation of the joint under external load with preload.

Statically Loaded Tension Joint with Preload.

Example problem on number of bolts required to resist separating external load.

Example Problem on Statically Loaded Joint with Preload

Usual analysis of checking the joint members for failure.

Bolted and Riveted Joints Loaded in Shear

Example Problem on Bolted Riveted Joints Loaded in Shear

Types of Loading acting on the bolt due to eccentric loading on the joint. The relations of those loadings.

Eccentric Shear Loading on the Bolted or Riveted Joints

Bolted joints under fluctuating loads. Fatigue factor of safety values according all fatigue failure theories.

Fatigue Loadings of Tension Joints

Final year B. E Mechanical Engineering student about to pursue MS in the USA, vocalist, chess player


Karthik Balaji Keshavamurthi

It will be about bearings, it's principle, types and selection

Design of Rolling and Sliding Bearings for GATE

B.tech (Mechanical Engg.)

 | GATE & Engineering services aspirant |

Ayush Shrivastava

This course will cover complete syllabus of machine design and will be very helpful for semester exams.
It will help students to understand the use of databook.
shorttricks have been discussed so that data required could be found out in minimum time.

(Hindi) Machine Design using Databook for RGPV

Shubham Rajput

This course is all about the basics of Machine design which is considered as the important subject from GATE point of view and also apart from theory there will be a question related to that particular concept

Basics of Machine Design for GATE

ies prelims cleared
gate 2018 cleared
gate 2019 cleared
4 year teaching experience



Ravindra Lakhara

Full description  about design of machine element with funny conceptual tricky study.

Lessons

41 lessons • 7h 23m

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Design Of Machine Elements

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Course Overview: Design Of Machine Elements Part 1

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Failure Theories

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Maximum Shear Stress (MSS) Theory

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Distortion Energy (DE) Theory

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Distortion Energy (DE) Theory for Different Stress States

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Example Problems in DE and MSS Theories

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Coloumb-Mohr Theory

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Coloumb-Mohr Theory for Plane Stress

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Failure of Ductile Materials summary

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