calculating maximum contact pressure on a

Gauge Pressure Absolute Pressure and Pressure

7 Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by pressure alone calculate the total area of the tires in contact with the ground The bicycle plus rider has a mass of 80 0 kg and the gauge pressure in the tires is 3 50 10 5 Pa

HOW TO SIZE A PRESSURE REGULATOR

The nomograph also allows you to find the maximum flows for smaller differential pressures The flows which you find for any given pressure differential can be used for sizing a relief valve Note! The nomograph does not say anything about accuracy it just gives you maximum flows Calculating the outlet port area (A2) Use the formula:

Chapter 3: Review of Basic Vacuum Calculations

mixture of gases exerts a pressure that presses uniformly on all objects on the surface of the earth This pressure is about 15 pounds per square inch at sea level Table 3 2: Composition of Dry Air Gas Partial Pressure [Torr] Percent [by volume] nitrogen 593 78 1 oxygen 159 20 9 argon 7 1 0 934 carbon dioxide 0 25 0 033 neon 1 4 x 10-2 0 0018

Barlow's Formula

Working pressure is a term used to describe the maximum allowable pressure a pipe may be subjected to while in-service Barlow's formula can be used to calculate the maximum allowable pressure by using design factors as P a = 2 S y F d F e F t t / d o (3) where P a = maximum allowable design pressure (psig) S y = yield strength (psi)

Pressure Area to Force Calculator

If you want to calculate the force you will need to multiply the kgf/cm2 value (which is a pressure) by the cross sectional area of the hydraulic ram/cylinder in square centimeters If the force is 1 kgf and the area 1 cm2 then the pressure in bar would equal 1 0197162 bar

What Is the Formula for Calculating Blood Pressure

Today digital blood pressure machines are capable of accurately calculating blood pressure automatically Systolic Blood Pressure Systolic blood pressure measures how hard the heart's left ventricle contracts to circulate blood through the body Normal adult blood pressure is 120/80 where the top (first) number is the systolic pressure

Tire Contact Patch

Remember if Contact_patch_area = Weight / Tire_pressure then the average contact patch pressure we calculate should be reasonably close to the actual tire pressure and not change a whole lot throughout the load range I e Camp A says that if you double the weight on the tire the contact patch pressure remains the same

Tutorial of Hertzian Contact Stress Analysis

The maximum pressure within the contact area occurs as a compression in the center For the equation in figure 2 use R=∞ for a sphere against a flat surface For an internal radius like a ball and socket joint a negative radius would be used for the socket Figure 3 shows the equation for calculating this pressure

Pressure Drop Online

Pressure Drop Online-Calculator Calculation of pressure drops of flowing liquids and gases in pipes and pipe elements (laminar and turbulent flow) Note: Calculations are possible only if Javascript is activated in your browser Pressure Drop Online-Calculator for small mobiles This version is usable for browsers without Javascript also

Blood Pressure Calculator

Blood pressure is an important and vital health indicator High blood pressure (arterial hypertension) may cause changes to blood vessels resulting in Atherosclerosis also known as "hardening of the arteries" Atherosclerosis is the leading cause of stroke heart attacks and peripheral vascular disease

Contact mechanics

Aug 12 2006Contact us Close Menu Forums Homework Help Biology and Chemistry Homework Help I need help calculating the maximum pressure I've serach for almost a day now just to search the formula to calculate the maximum pressure in the cycle A very big thank you and appreciate for the help Answers and Replies Related Biology and Chemistry

Blood Pressure Calculator

Blood pressure is an important and vital health indicator High blood pressure (arterial hypertension) may cause changes to blood vessels resulting in Atherosclerosis also known as "hardening of the arteries" Atherosclerosis is the leading cause of stroke heart attacks and peripheral vascular disease

Pressure Drop Online

Pressure Drop Online-Calculator Calculation of pressure drops of flowing liquids and gases in pipes and pipe elements (laminar and turbulent flow) Note: Calculations are possible only if Javascript is activated in your browser Pressure Drop Online-Calculator for small mobiles This version is usable for browsers without Javascript also

HOW TO SIZE A PRESSURE REGULATOR

The nomograph also allows you to find the maximum flows for smaller differential pressures The flows which you find for any given pressure differential can be used for sizing a relief valve Note! The nomograph does not say anything about accuracy it just gives you maximum flows Calculating the outlet port area (A2) Use the formula:

Infiltec: Large Building Air Leakage Test Calculator

Sep 30 2015STACK PRESSURE CALCULATION: (Click on any box to recalculate all boxes) Change in Inside/Outside Pressure with height Pascals or Inches of Water Column ** Note: When the outside air temperature is lower than inside there will be an upward pressure at the top of the building similar the lift of a hot air balloon

Normal Shock Wave Equations

Apr 06 2018There is a loss of total pressure associated with a shock wave The ratio of the total pressure is shown on the slide Because total pressure changes across the shock we can not use the usual (incompressible) form of Bernoulli's equation across the shock The Mach number and speed of the flow also decrease across a shock wave

Gasket Compression and Fastener Spacing Design Equation

The maximum pressure P max equals three times the minim pressure P min For most gaskets Pmax is normally greater than twice Pmin Using the ratio Pmax/Pmin = 3 bolt spacing is reduced by less than 7% for Pmax to Pmin ratio of 6 Actual correction factors for other values of P max and P min are shown in table A P max / P min Correction

49 CFR 192 619

(a) No person may operate a segment of steel or plastic pipeline at a pressure that exceeds a maximum allowable operating pressure (MAOP) determined under paragraph (c) (d) or (e) of this section or the lowest of the following: (1) The design pressure of the weakest element in the segment determined in accordance with subparts C and D of this part However for steel pipe in pipelines

Determination of Maximum Injection Pressure for Class I Wells

Formation breakdown pressure is a function of the tensile strength of the rock its pore pressure and the maximum and minimum horizontal stresses Breakdown pressure gradients can range from less than 0 4 to over 1 2 psi/ft The breakdown pressure which is measured at the bore hole can be affected greatly by borehole conditions

Infiltec: Large Building Air Leakage Test Calculator

Sep 30 2015STACK PRESSURE CALCULATION: (Click on any box to recalculate all boxes) Change in Inside/Outside Pressure with height Pascals or Inches of Water Column ** Note: When the outside air temperature is lower than inside there will be an upward pressure at the top of the building similar the lift of a hot air balloon

Maximum Span Recommended Calculator for Wood Joists and

While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state-of-the-art neither the West Coast Lumber Inspection Bureau the American Wood Council nor its members assume any responsibility for any particular design prepared from this Online Span Calculator

3 Ways to Calculate Fluid Pressure

Oct 25 2019To calculate fluid pressure use the formula p g h = fluid pressure where p is the density of the liquid g is the acceleration of gravity and h is the height of the fluid Multiply the variables and take the product of the three to solve the equation

Barlow's Formula Calculator

Maximum Allowable Operating Pressure: S = SMYS - reduced by a design factor Mill Hydrostatic Test Pressure: S = SMYS - reduced by a design factor depending on OD and grade While this calculator is useful when planning your piping project we recommend you contact us if you need additional information or have unusual or special applications

HOW TO CALCULATE PRESSURE ANYWHERE IN A PUMP

2 represent the pressure heads corresponding to the pressures in the tanks p 1 and p 2 If the tanks are open to atmosphere that H 1 and H 2 will equal zero It is always possible to calculate pressure head when the pressure is known using equation [1] where SG is the specific gravity of the fluid Figure 1 The pressure variation