Torsion

Recent Examples on the Web Vibram sole make a stable platform with enough flex to be comfortable while still resistant to torsion. — Chris Meehan, Popular Mechanics, 15 Dec. 2022 This is called torsion. — Quanta Magazine, 23 Feb. 2022 There have been reported cases of ovarian hyperstimulation syndrome (which can be life threatening), ovarian torsion (as in Maia's case), blood clots, development of long-term health problems, infertility, and, according to some researchers, even cancer. — Andrea Stanley, Redbook, 19 Oct. 2017 The electric drivetrain serves up instant torque, linear response, and a real shove-in-the-back turn of speed, but not such as to overwhelm the stock Carrera brakes and torsion-bar suspension. — Tim Pitt, Robb Report, 17 Mar. 2023 The front strut and rear torsion beam suspension layout is familiar practice for Mazda, but the company has always had a feel for setup. — Dan Neil, WSJ, 21 May 2021 To avoid oversteer, a link-type rear suspension with semi-trailing arms (and transverse torsion bars) was adopted. — Car and Driver, 27 Jan. 2023 Scruggs is currently engineering prototypes that can withstand the torsion involved without breaking and without being too heavy or expensive. — Discover Magazine, 4 Aug. 2010 But those models come with a continuously variable automatic transmission and a less-sophisticated torsion beam rear suspension. — cleveland, 17 Dec. 2022 See More These examples are programmatically compiled from various online sources to illustra...

In non-circular cross-sections, twisting is accompanied by a distortion called warping, in which transverse sections do not remain plane. T = J T r τ = J T ℓ G φ (tau) is the maximum shear stress at the outer surface • J T is the • r is the perpendicular distance between the rotational axis and the farthest point in the section (at the outer surface). • ℓ is the length of the object to or over which the torque is being applied. • φ (phi) is the angle of twist in • G is the shear modulus, also called the 2 (psi), or lbf/ft 2 or in ISO units N/mm 2. • The product J T G is called the w T. Properties The shear stress at a point within a shaft is: τ φ z = T r J T Calculation of the Assumptions: • Power carried by the shaft is 1000 • τ yield) is: 250 × 10 6 N/m 2. • Electricity has a frequency of 50 The ω = 2 π f The yield stress/5, the result is a diameter of 69 cm, the approximate size of a turboset shaft in a nuclear power plant. • Seaburg, Paul; Carter, Charles (1997). Torsional Analysis of Structural Steel Members. • Case and Chilver "Strength of Materials and Structures • Fakouri Hasanabadi, M.; Kokabi, A.H.; Faghihi-Sani, M.A.; Groß-Barsnick, S.M.; Malzbender, J. (October 2018). "Room- and high-temperature torsional shear strength of solid oxide fuel/electrolysis cell sealing material". Ceramics International. 45 (2): 2219–2225. Languages • العربية • Български • Bosanski • Català • Deutsch • Eesti • Ελληνικά • Español • Esperanto • Euskara • فارسی • Français • Gaeilge ...

In the solid mechanics field, Torsion is defined as the twisting of an object due to a torque applied to it. Torsion can be expressed in either pascals (Pa) or an S.I. unit Newtons per square meter, or in pounds per square inch (psi). In contrast, torque is expressed in Newton-meters (Nm) or foot pound-force (ft.lbf). In the object, some sections are perpendicular to the torque axis; in these sections, the resultant shear stress is perpendicular to the radius. In non-circular cross-sections, a distortion accompanies twisting, this distortion is known as warping. In warping, transverse sections are rough. What is Torsion Constant? The Torsion constant is considered as a geometrical property of the cross-section of a bar that exists in the relationship between the applied torque along with the axis’s bar and the angle of twist. All this theory is applied to a homogeneous plastic bar. A bar’s Torsional stiffness can be described by the Torsion constant when accompanied by properties like the length. The S.I. the unit of Torsion constant is m 4 . Partial Derivation The derived formula for a beam of uniform cross-section along the length: θ = TL / GJ Where • θ is the angle of twist in radians. • T is the torque applied to the object. • L is the length of the beam. • G is the material’s modulus of rigidity which is also known as shear modulus. • J is the Torsional constant. What is the Torsion Equation? A bar having uniform sections that are fixed at one end and is subject to a ...

Overview A testicular torsion occurs when your spermatic cord twists, cutting off blood supply to your testicle. It requires immediate treatment to prevent permanent damage to your testicle. What is testicular torsion? Testicular torsion is a serious and painful condition that affects your The spermatic cord supplies blood to the testicles in men and people How serious is testicular torsion? Testicular torsion is a very serious medical emergency. If you have sudden, intense pain in one of your testicles, call a healthcare provider or go to an emergency room (ER) right away. The risk of losing your testicle increases the longer you wait to get treatment for testicular torsion: • Almost everyone keeps their testicle if they get treatment within four to six hours. • Around half of people keep their testicle if they get treatment after 12 hours. • Only around 10% of people keep their testicle if they get treatment after 24 hours. How common is testicular torsion? Testicular torsion is rare. It affects about one in 4,000 men and people AMAB under age 25. It’s usually a spontaneous event, meaning it occurs without any apparent cause. It almost always affects only one testicle. It more commonly affects the left testicle than the right. Can I have testicular torsion in both testicles? Yes, you can have testicular torsion in both testicles. But it’s rare. Only about 2% of testicular torsion cases affect both testicles. Symptoms and Causes What are the symptoms of testicular torsion...

Testicular torsion During testicular torsion a testicle rotates, twisting the spermatic cord that brings blood to the scrotum, the loose bag of skin under the penis that contains the testicles. The reduced blood flow causes sudden and often severe pain and swelling. Testicular torsion occurs when a testicle rotates, twisting the spermatic cord that brings blood to the scrotum. The reduced blood flow causes sudden and often severe pain and swelling. Testicular torsion is most common between ages 12 and 18, but it can occur at any age, even before birth. Symptoms Signs and symptoms of testicular torsion include: • Sudden, severe pain in the scrotum — the loose bag of skin under your penis that contains the testicles • Swelling of the scrotum • Abdominal pain • Nausea and vomiting • A testicle that's positioned higher than normal or at an unusual angle • Frequent urination • Fever Young boys who have testicular torsion typically wake up due to scrotal pain in the middle of the night or early in the morning. When to see a doctor Seek emergency care for sudden or severe testicle pain. Prompt treatment can prevent severe damage or loss of your testicle if you have testicular torsion. You also need to seek prompt medical help if you've had sudden testicle pain that goes away without treatment. This can occur when a testicle twists and then untwists on its own (intermittent torsion and detorsion). Surgery is frequently needed to prevent the problem from happening again. Causes Tes...

Introduction Torsionally loaded shafts are among the most commonly used structures in engineering. For instance, the drive shaft of a standard rear-wheel drive automobile, depicted in Figure 1, serves primarily to transmit torsion. These shafts are almost always hollow and circular in cross section, transmitting power from the transmission to the differential joint at which the rotation is diverted to the drive wheels. As in the case of pressure vessels, it is important to be aware of design methods for such structures purely for their inherent usefulness. However, we study them here also because they illustrate the role of shearing stresses and strains. Figure 1: A drive shaft. Shearing stresses and strains Not all deformation is elongational or compressive, and we need to extend our concept of strain to include “shearing,” or “distortional,” effects. To illustrate the nature of shearing distortions, first consider a square grid inscribed on a tensile specimen as depicted in Figure 2(a). Upon uniaxial loading, the grid would be deformed so as to increase the length of the lines in the tensile loading direction and contract the lines perpendicular to the loading direction. However, the lines remain perpendicular to one another. These are termed normal strains, since planes normal to the loading direction are moving apart. Figure 2: (a) Normal and (b) shearing deformations. Now consider the case illustrated in Figure 2(b), in which the load \(P\) is applied transversely to ...