Is the deformation of the silicone case elastic or plastic

Assignment Help Mechanical Engineering

Reference no: EM13713277

A women dropped dropped her iPhone 1,400-feet when taking a picture on a plane. A few days later it was returned to her by a stranger - and the best part is it still works. The iphone is covered by a silicone case as shown in the picture below.

Assume that the phone hit the ground on its backside and travelled a distance of 7 cm (0.07 m) after the impact. What is the stress on the phone during the impact (in matrix form)? Is the deformation of the silicone case elastic or plastic? What would you expect to be the strain during the impact?

Reference no: EM13713277

Questions Cloud

Kind of problem an angular momentum-impulse equation : Explain in 4 to 5 sentences at least in what cases/in what kind of problem an angular momentum-impulse equation and concept can be reduced to conservation of angular momentum. Give an example of a problem where conservation of angular momentum is ..

Decorative water fountains consist of a water reservoir : Decorative water fountains consist of a water reservoir and underground piping to and from a pump. One such system is shown schematically in the figure. The pipe material is PVC(a table is provided). The outlet line from the pump is 18 m and the inle..

Assume that the vapor is an ideal gas : A compressed liquid mixture of 42 mol percent n-hexane (1) and 58 mol percent ethane (2) is to be fed to a flash tank where the pressure is reduced and a liquid and vapor stream separated. The flashing operation will be carried out at 32°C.

Atmospheric air can be modeled as ideal gas moisture : Atmospheric air can be modeled as ideal gas moisture at a temperature T0 and pressure P0. At a particular location the mole fractions are of the ideal gas components of the mixture are xoN2= 0.7567 xoH20= 0.0303 xoO2= 0.2035 xC02= 0.0003. Consider a ..

Is the deformation of the silicone case elastic or plastic : A women dropped dropped her iPhone 1,400-feet when taking a picture on a plane. A few days later it was returned to her by a stranger - and the best part is it still works. The iphone is covered by a silicone case as shown in the picture below.

Determine heat transferred through the reactor walls : Consider combustion of hydrogen in pure oxygen under constant pressure in a two-inlet and single-exit reactor. The reactants enter the reactor at temperature T1 = 200 K. The products leave the reactor at temperature T2 = 2000 K. No work is developed ..

Expand to fill the entire container at constant temperature : Determine the change in entropy for 1.0 mole of an ideal gas originally confined to one-half of a 5.0-L container when the gas is allowed to expand to fill the entire container at constant temperature.

Ratio between longitudinal and lateral deformations : At the proportional limit, a 30 mm wide × 12 mm thick bar elongates 2.0 mm under an axial load of 41.5 kN. The bar is 1.5-m long. If Poisson’s ratio (ratio between longitudinal and lateral deformations) is 0.33 for the material, determine:

Consider the classical adiabatic saturation process : Consider the classical adiabatic saturation process in which a stream of is mixed adiabatically and isobarically (T1)with a stream of liquid water in order (T2) to become a saturated air +water vapor mixture . Show that the adiabatic saturation tempe..

User Account

All Pages