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Influence line

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Influence lines indicate a load should be for a worst case condition for a specific reaction or internal force. Mueller-Breslau Principle gives you qualitative influence lines True False To find the maximum positive moment due to a variable distributed load, calculate the influence line, apply the distributed load to all areas where the IL is positive, and multiply the of the IL where the load is applied by the of the distributed load. To find the maximum positive moment due to a concentrated load, calculate the influence line, apply the point load at the location of the largest positive ordinate on the IL, and multiple the of the IL where the load is applied by the of the concentrated load. Draw the influence lines for R_B, R_D, and R_F, plus V_E and M_E For the/problem above, assuming a uniform load of variable length of 2 kips/ft, determine the maximum positive and negative values of bending moment at Point E. Solution ILD shows graphical response of moving a load (in the blank ) graph of a response function of a structure as a function of the position of a downward unit load moving across the structure The influence line for a function (reaction, shear, moment) is to the same scale as the deflected shape of the beam when the beam is acted on by the function. To draw the deflected shape properly, the ability of the beam to resist the applied function must be removed. In many practical applications, it is necessary to determine only the general shape of the influence lines but not the numerical values of the ordinates. Such an influence line diagram is known as a qualitative influence line diagram An influence line diagram with numerical values of its ordinates is known as a quantitative influence line diagram. Thus it is qualitative A. the moment of the ILD (area of the ILD for moment ) B. Numerical value of the distributed load A. the moment of the ILD (ordinate value at the load position of the ILD for moment ) B. Numerical value of the concentrated load.

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Influence lineYusoph Sani

Influence lines gdlcAnsar Abbas

Mechanical principles and applications presDr Andrew Kimmance PhD, MSc, BSc, MAPM, CIOB, AHEA

IL of moment for determinate structure tanviraust

Influence lines (structural analysis theories)Madujith Sagara

INFLUENCE LINES.pdfRAVI JANGID

- Influence lines indicate a load should be for a worst case condition for a specific reaction or internal force. Mueller-Breslau Principle gives you qualitative influence lines True False To find the maximum positive moment due to a variable distributed load, calculate the influence line, apply the distributed load to all areas where the IL is positive, and multiply the of the IL where the load is applied by the of the distributed load. To find the maximum positive moment due to a concentrated load, calculate the influence line, apply the point load at the location of the largest positive ordinate on the IL, and multiple the of the IL where the load is applied by the of the concentrated load. Draw the influence lines for R_B, R_D, and R_F, plus V_E and M_E For the/problem above, assuming a uniform load of variable length of 2 kips/ft, determine the maximum positive and negative values of bending moment at Point E. Solution ILD shows graphical response of moving a load (in the blank ) graph of a response function of a structure as a function of the position of a downward unit load moving across the structure The influence line for a function (reaction, shear, moment) is to the same scale as the deflected shape of the beam when the beam is acted on by the function. To draw the deflected shape properly, the ability of the beam to resist the applied function must be removed. In many practical applications, it is necessary to determine only the general shape of the influence lines but not the numerical values of the ordinates. Such an influence line diagram is known as a qualitative influence line diagram An influence line diagram with numerical values of its ordinates is known as a quantitative influence line diagram. Thus it is qualitative A. the moment of the ILD (area of the ILD for moment ) B. Numerical value of the distributed load A. the moment of the ILD (ordinate value at the load position of the ILD for moment ) B. Numerical value of the concentrated load

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