Load Calculation of Hydrodynamic Journal Bearing

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Adwait Mahajan 2023-12-30

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https://ww2.mathworks.cn/matlabcentral/answers/2065146-load-calculation-of-hydrodynamic-journal-bearing

编辑： Adwait Mahajan 2023-12-30

I have the pressure field generated in circumferencial and axial direction. But can't crack the double integration part. Can anybody help me with a code for that? It would be big help.

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Dyuman Joshi 2023-12-30

Is theta_prime related to theta? If yes, then how?

Are p and R constants?

Adwait Mahajan 2023-12-30

编辑：Adwait Mahajan 2023-12-30

R is a constant. p is a function of theta_prime and z.

theta_prime = theta - alpha

where, alpha is the attitude angle of the bearing.

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Answer 1

Hassaan 2023-12-30

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https://ww2.mathworks.cn/matlabcentral/answers/2065146-load-calculation-of-hydrodynamic-journal-bearing#answer_1380471

编辑：Hassaan 2023-12-30

在 MATLAB Online 中打开

you could use integral2 or dblquad function:

% Define the pressure function, replace this with your actual function
pressure = @(theta_prime, z) cos(theta_prime); % Example function
% Integration bounds
theta_prime_min = 0;
theta_prime_max = 2 * pi;
z_min = 0;
z_max = 1; % Replace with the actual length L of the bearing
% Radius R is a constant, replace with the actual radius of the bearing
R = 1;
% Radial load Wr calculation using double integration
Wr = integral2(@(theta_prime, z) pressure(theta_prime, z) .* R .* cos(theta_prime), ...
               z_min, z_max, theta_prime_min, theta_prime_max);
% Tangential load Wt calculation using double integration
Wt = integral2(@(theta_prime, z) pressure(theta_prime, z) .* R .* sin(theta_prime), ...
               z_min, z_max, theta_prime_min, theta_prime_max);
disp(Wr);
    4.5699
disp(Wt);
    2.2245

Replace the pressure function and the bounds with your actual function and bearing dimensions.

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