Cosmolearning is a free educational website for students and teachers. Todays learning outcome is to describe a procedure for finding the principal stresses and principal planes on a 3d state of stress by solving the eigenvalue problem. Up next lectue 23 construction of mohr s circle duration. Proone is a product from that helps in the preparation of technical competitive exams such as gate, ies, drdo, barc, jto, etc. Mechanical engineering strength of materials nptel. In this tutorial, the tutor explains different types of stresses and strains acting on various construction materials. Ed is the failure envelope tangential to mohrs circle at d with an angle. Mohrs circle equation the circle with that equation is called a mohrs circle, named after the german civil engineer otto mohr.
Civil engineering free online courses free video lectures. Ppt mohr circle powerpoint presentation free to view. Gate mechanical engineering strength of materials video. He also developed the graphical technique for drawing the circle in 1882. Here, the fully three dimensional stress state is examined. Elastic, inelastic, plastic and viscoelastic material. The force f is acting on the surface over an area da of the surface.
Blogging about nptel, digimat digital learning platform, nix operating systems and freeopen source software. Nptel provides elearning through online web and video courses various streams. Application of the mohrcircle construction to problems of inhomogeneous deformation w. Sound hi, this is module 26 of mechanics of materials i. Draw the circle passing throughx on the t s coordinate system. The goal of this site is presently to help the undergraduates pursuing b.
Mohrs circle are categorized into six cases, depend on the sign of shear stress and which normal stress is larger. Som principal stress mohr circle lecture 4 youtube. Soil mechanics online course video lectures by iit bombay. Stress concentrations, mohrs circle for plane strain, and measuring strainsin this section, we will learn about stress concentrations, and discuss plane strain, develop mohrs circle for plane strain, and explore methods of measuring strain. You can download this utility from this link downloads 2017. Tutorial homework problems are developed for each course to support the problem solving techniques specific for that course. Download nptel video lectures mp4 flv without going. Mohrs stress circle watch more videos at lecture by.
Mohrs circle is a geometric representation of the 2d transformation of stresses and is very useful to perform quick and efficient estimations, checks of more extensive work, and other such uses. There will be some repetition of the earlier analyses. And so, we looked at the 3d state of stress early in the course. Strength of material som notes free pdf download strength of material notes by prof. Theories of failure maximum shear stress theory to use this theory for either two or threedimensional static stress in homogeneous, isotopic, ductile materials, first compute the three principal stresses 1, 2, 3 and the maximum shear stress as 12 max 2 max min 2 pp then compare the maximum shear stress to the failure criterion. Note the equations are given here in the s1s2 plane, where s1 is greater than s2. A semigraphical procedure using mohrs circle in geotechnical engineering 63 steps for the construction and use of mohrs circle geotech y for the given state of plane stress. Syllabus of amie exams section b, mechanical engineering. Elastic constants and strain energy densities recap of lectures 1 to 11. Select toggle helper to showhide keyboard instructions below the canvas in a mohrs circle question, youll be asked either to draw a mohrs circle on a graph to show stressstrain or to analyze a mohrs circle by marking points along the circumference of. Introduction free body diagram revisited normal, shear and bearing stress stress on inclined planes under axial loading strain mechanical properties of materials true. This section provides information about lecture topics, lecture notes, and lecture summaries. Nptel online certification courses since 20, through an online portal, 4, 8, or 12week online courses, typically on topics relevant to students in all years of higher education along with basic core courses in sciences and humanities with exposure to relevant tools and technologies, are being offered. You can find most of the materialsnotes related to civil engineering.
The best way to download any youtube playlist is via youtubedl command prompt utility. Download nptel video lectures mp4 flv without going through nptel website. Mohr circle video tutorials video lecture for mohr circle. The lecture notes tend to be more detailed in the second half of the course. Lecture summaries are also available for the first half of the. This video lecture will introduce you to concepts of principal stress, principal plane and mohrs circle analysis.
Extension of failure envelope ed backward intersects the xaxis at f on the negative side of origin o. Mohr circle and principal and shear stress duration. Nptel, online courses and certification, learn for free. In our video lectures, we will take you through the different steps which are involved in civil engineering.
Civil engineering encompasses all those work that involves construction, maintenance and innovative design of different aspects and things like bridges, canals, buildings and more. For the most part, the discussion was confined to twodimensional states of stress. Video lesson mechanical engineering strength of materials video lecture training, list videos, quiz, materials, useful links, documents and discussions for mechanical engineering strength of materials video lecture training. If i have a really big multigigabyte video file produced by premiere pro, involving a few images and audio, how can i make the video a. Application of the mohrcircle construction to problems of. Nptel video lecture topics for mechanical engineering new no. Stress transformation and mohrs circle for stresses. Radius of mohrs circle is equal to the maximum shear stress. Mohrs circle explanation in detail in simple languagr. Autoplay when autoplay is enabled, a suggested video will automatically play next. Means department of geological sciences, state university of new york at albany, 1400. It is a graphical method to determine normal, tangential and resultant stresses on any oblique planes and position and magnitude of principal stresses. Buy nptel course dvds by iits and iisc, prepare for gate. It has numerous applications in the field of construction engineering.
Strength of materials 2 pdf notes sm 2 pdf notes file to download are listed below strength of materials 2 notes pdf sm 2 notes pdf. This course explores the topic of solid objects subjected to stress and strain. You can complete mohrs circle answer questions on a computer. Tutorial homework problems educator features mastering. A significant portion of this course was taught at the blackboard, so the following lecture notes are not intended to fully capture the content of the course. This notes are best for strength of material subject. Now taking this as centre and ob or oa as radius if we plot the circle, eventually we are going to get the mohr s circle. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses.
Mechanical engineering advanced strength of materials nptel. Spend time on studying, not for searching material to study. Theories of failure memorial university of newfoundland. Strength of materials 1 pdf notes sm 1 pdf notes file to download are listed below please sm i check it. So in our further lectures what we try to look into is that how further we discuss. Here are a few examples of answer entry in masteringengineering beyond numerical input. Maiti department of mechanical engineering iit bombay for more details on nptel visit. Soil mechanics free online course video tutorial by iit bombay. Mohrs circle and mohrs circle analysis and how to identify a pole and the. Stress transformation and mohrs circle for stresses 1. Mohrs circle explanation in detail in simple languagr closed ask question asked 2 years, 8 months ago. Up next mohr circle and principal and shear stress duration. Someone please explain me mohrs circle in detail in a simple language. Then the stress is defined as the intensity with which the.
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