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What is the amount of axial stress on a member which is subjected to a sudden load when compared to load applied gradually?
The maximum stress induced in a body due to suddenly applied load is twice the stress induced when the same load is applied gradually
Why metals break on dynamic load but not on static load of same magnitude?
That isn't necessarily true. If the metal is under repeated dynamic loading, it becomes a matter of material fatigue and not strength. For instance, if you bend a paper clip back and forth repeatedly, it becomes easy to break. The material properties have changed (more brittle) due to the repeated dynamic load.In the case of impact or blast loading, it is actually the opposite. Materials often have the ability to withstand much larger loads than they could statically, but for very short durations (on the scale of milliseconds).because i said so.Dynamic load- Any load which is nonstatic, such as a wind load or a moving live load.Static Load - Any load, as on a structure, which does not change in magnitude or position with time
What is the difference between mechanical stress and thermodynamic stress?
Mechanical stress is due to the resistance offered by various materials against physical distortion or damage. Thermal stress is caused due to the expansion of materials due to the variations in temperature with respect to reference value.
What strain or pressure in a material due to forces acting on it?
Stress
How do I calculate the exstension in a steel cable that is 8 metres long and has a 500kg weight on it. The Young's modulus of the steel is 210 GPa and the diameter is 7.2mm?
In order to calculate the extension of the cable we must first calculate the strain. Strain is related to Young's modulus using the following relation:E = σA / εAWhere:E = Young's ModulusσA = Axial StressεA = Axial StrainTherefore to calculate the strain, we must first calculate the axial stress in the cable:σA = Force / AreaThe cross sectional area (CSA) of the cable is equal to:CSA = (pi(d2))/4 = pi x r2CSA = pi(0.0036)2CSA = 4.0715x10-5 m2Axial Stress = (500 x 9.81) / 4.0715x10-5σA = 120471449.98 PaAxial Stress = 120.47144998 MPaStrain of cable (εA) = Axial Stress / Young's ModulusεA = 120.471x106 / 210x109εA = 5.736735713x10-4To calculate the extension of the cable:εA = Extension / Original LengthTherefore:Extension = εA x Original Length= 0.0045893885704 m≈ 4.6 mm of extension.
What is the amount of axial stress on a member which is subjected to a sudden load when compared to load applied gradually?
The maximum stress induced in a body due to suddenly applied load is twice the stress induced when the same load is applied gradually
What is the difference between tensile stress and breaking stress?
tensile stress is due to just the tension in the load whereas breaking stress can be due to breaking,shearing or compression!
What is the difference between Bending and Direct Stress?
-> when a structural body gets deviated from its original position or from its centroidal axis due to externally applied load,then it is termed as BENDING->DIRECT STRESS is the stress which act normal to the plane-> stress and bending are the two different things. stress produced by load per area & bending is the effect produced by load and stress.
What is the thermal stress equation used to calculate the stress induced in a material due to changes in temperature?
The thermal stress equation used to calculate stress induced in a material due to temperature changes is given by: ET where: thermal stress E Young's modulus of the material coefficient of thermal expansion T change in temperature
Where will you find the maximum shear stress in a beam?
The maximum stress occurs where shear load is maximum and maximum stress is at the center of the beam cross section if loaded in shear due to bending. It drops to zero at the top and bottom surfaces. The average stress is load divided by area ; maximum stress is dependent on shape of cross section and is 1.5 times load divided by area at the cross section center for rectangular cross section. For shear due to twist, max shear stress in the outer surface.
What is instantaneous stress?
Instantaneous stress refers to the stress experienced by a material at a specific moment in time, typically due to an applied force or load. It is a snapshot of the internal forces within the material at that exact instant and can help in analyzing the material's response to the applied load.
Is the stress that causes stretching and elongation.?
Yes, stress can cause materials to stretch and elongate. This is due to the internal forces within the material rearranging to accommodate the external load applied.
What is fracture in mechanics?
Fracture in Mechanics is the event in which an object loses material continuity (it splits in more than one piece) due to the application of a stress load. Said stress load has a consequence in strain, that with the proper values, can induce an object to "fail" in an event called fracture.
What are the causes absenteeism?
due to illness Bordon heavy work load stress less motivation no job rotation working in same field
What is the static and dynamic load?
Static load and dynamic load refer to two different types of loads that materials, structures, and systems may experience: **Static Load:** **Definition:** A static load is a force that is applied to a structure or component and remains relatively constant over time. It doesn't change in magnitude or direction while being applied. **Example:** The weight of a stationary object, like a book sitting on a table, creates a static load on the table. The load remains constant as long as the book is not being moved. **Dynamic Load:** **Definition:** A dynamic load is a force that varies with time, either in terms of magnitude, direction, or both. It involves motion or acceleration of the load. **Example:** When a car moves along a road, the forces acting on its tires and suspension system are dynamic loads. These loads change as the car accelerates, decelerates, or encounters bumps in the road. In engineering and structural design, understanding both static and dynamic loads is crucial. Structures and materials need to be designed to withstand the loads they are likely to experience during their intended use. Static loads are often easier to predict and design for, as they are constant, while dynamic loads require consideration of factors such as acceleration, vibration, and impact. For example, when designing a bridge, engineers need to account for the static load of the bridge itself and any stationary loads (like the weight of vehicles when the bridge is not in motion). They also need to consider dynamic loads, such as the forces exerted by moving vehicles, wind, and seismic activity. The combination of static and dynamic loads determines the overall stress and strain on a structure. My Recommendation No Cap-𝕓𝕚𝕥.𝕝𝕪/𝕖𝕟𝕕𝕠𝕡𝕖𝕒𝕜𝟝
What is the dead load and a live load and a dynamic load in a building?
Dead load is the total load of all of the components of the building that generally do not change over time, such as the steel columns, concrete floors, bricks, roofing material etc. Live load is the sum of the dead load plus the "live" occupants and temporary loads, such as staff in the building, desks, chairs, etc. Things that are contained in the building but do not make up its' construction. Dynamic load is loading which changes over time, such as wind pressure on the walls, snow loading on the roof, and even earthquake loads.
How do you calculate pulley force needed?
To calculate the force needed on a pulley system, you can use the formula: Force = (mass * acceleration) + (mass * gravity), where mass is the load being moved, acceleration is the desired speed at which the load should move, and gravity is the force due to gravity acting on the load. By considering these factors, you can determine the force required to move the load with the pulley system.
