Articles Posted in the " Principal stresses " Category

  • Principal Stresses

    Principal Stresses

       Principal Stresses Principal stresses come into play under complex loading i.e. when a body is under normal and shear stresses. Principal planes  (i) Principal planes are at right angles to each other and are given by tan2θpp = 2 τ/( σx — σy) In this  σx and σy are assumed to be tensile. Two values of tan 2θ […]


  •   Principal stresses-Assignment

      Principal stresses-Assignment

     Principal stresses-Assignment At a point in an elastic material under strain, the stresses on three mutually perpendicular planes are follows: A normal tensile stress of 60 N/mm2 and a shear stress of 40 N/mm2 on one plane, a normal compressive stress of 40 N/mm2 and a complementary shear stress of 40 N/mm2 on the other […]


  • MCQ: Principal stresses-2

    MCQ: Principal stresses-2

      https://www.mesubjects.net/wp-admin/post.php?post=4378&action=edit     MCQ Theories elastic failure https://www.mesubjects.net/wp-admin/post.php?post=4367&action=edit      MCQ springs https://www.mesubjects.net/wp-admin/post.php?post=4290&action=edit      MCQ Bending stresses https://www.mesubjects.net/wp-admin/post.php?post=4236&action=edit       MCQ SF and BMD-2 https://www.mesubjects.net/wp-admin/post.php?post=4231&action=edit        MCQ SF & BMD-1 https://www.mesubjects.net/wp-admin/post.php?post=4227&action=edit         MCQ P. Stresses-2 https://www.mesubjects.net/wp-admin/post.php?post=4221&action=edit            MCQ Composite sections MCQ: Principal stresses- 2 Mohr’ s circle is a graphical method to find (a) Bending stresses (b) Principal stresses (c) Torsional shear stresses (d) None […]


  • mcq: Principal stresses-1

    mcq: Principal stresses-1

    https://www.mesubjects.net/wp-admin/post.php?post=4227&action=edit         MCQ P. Stresses-2 https://www.mesubjects.net/wp-admin/post.php?post=4221&action=edit            MCQ Composite sections MCQ : Principal stresses-1 A principal plane is a plane of (a) Zero tensile stress (b) Zero compressive stress (c) Zero shear stress (d) None (Ans: c) A principal plane is a plane of (a) Only normal stress (b) Only shear stress (c) Only bending stress (d) […]


  • Short Interview Question Answers- Principal stresses

    Short Interview Question Answers- Principal stresses

       Short Interview Question Answers- Principal stresses Q. What is angle of obliquity? A. Any plane is to be under complex stress if it has a normal and shear stress simultaneously. Then there will be a resultant stress. The angle between the resultant and normal stress is called the angle of obliquity and is represented […]


  • Mohr’s Stress circle-2

    Mohr’s Stress circle-2

     Mohr’s Stress circle-2  GRAPHICAL METHOD: MOHR’S STRESS CIRCLE METHOD  We know from the analytical method that  σθ = (σx + σy)/2  + ((σx — σy)/2) (Cos2θ) + τ Sin2θ τθ = (( σx — σy)/2) (Sin2θ) — τ Cos2θ Square and add, we get the equation of a circle as given below. [σθ – (σx — σy)/2)]2 +τ2  = [(1/2) (σx — σy) […]


  • Ellipse of Strain

    Ellipse of Strain

    Ellipse of Strain ELLIPSE OF STRAIN It is the locus of the resultant strain on the infinite inclined planes within a body under principle strains. It is a graphical method to find the resultant strain and the angle of obliquity on a given inclined plane (with the plane of major principal strain).   CONSTRUCTION Being […]


  • Ellipse of stress

    Ellipse of stress

    Ellipse of stress Introduction Ellipse of stress is used to find resultant stress and the angle of obliquity on any plane within a stressed body. In 2-D, it is called ellipse of stress . In 3 D it is called ellipsoid of stress. Actually all bodies are 3-D. All stress systems are also 3-D. But […]


  • Mohr’s Stress Circle -1

    Mohr’s Stress Circle -1

    Mohr’s Stress Circle -1 GRAPHICAL METHOD: MOHR’S STRESS CIRCLE METHOD  We know σθ = (σx + σy)/2  + ((σx — σy)/2) (Cos2θ) + τ Sin2θ τθ = (( σx — σy)/2) (Sin2θ) — τ Cos2θ Square and add, we get the equation of a circle as given below. [σθ – (σx — σy)/2)]2 +τ2  = [(1/2) (σx — σy) + 4τ2 ]1/2 Thus […]


  • Principal Stresses-Introduction

    Principal Stresses-Introduction

      PRINCIPAL STRESSES Number of forces are acting simultaneously almost on each body. Thus, it is complex  loading condition. When these forces increase, a body fails by a simple principal stress or by maximum shear stress. COMPLEX STRESS SYSTEM When normal and shear stresses act simultaneously  on an area (plane), it is called a complex […]