Managefy version 1.4.5 function onPageLoad() { calcCommonSetup(); } function doCalc() { var k = document.AppForm.ddlMaterials[document.AppForm.ddlMaterials.selectedIndex].getAttribute("k"); var l = parseFloat(document.AppForm.txtL.value); var w = parseFloat(document.AppForm.txtW.value); var t = parseFloat(document.AppForm.txtT.value); if(document.AppForm.ddlMaterials.selectedIndex == 0) { alert('Please select a material!'); document.AppForm.ddlMaterials.focus(); return false; } if ( isNaN(l) ) { alert('Please enter an L value!'); document.AppForm.txtL.focus(); return false; } if ( isNaN(w) ) { alert('Please enter a W value!'); document.AppForm.txtW.focus(); return false; } if ( isNaN(t) ) { alert('Please enter a T value!'); document.AppForm.txtT.focus(); return false; } //Ensure that all values are in SI l = convertLengthToSI(l); w = convertLengthToSI(w); t = convertLengthToSI(t); //The effective length/thickness var te = t * getMaterialK(); var p = te / Math.sqrt(4 * w * l / Math.PI); var pc = calcPermeanceCoeff(p); document.AppForm.answer.value = roundNum(pc); return true; }

Magnetic Field Permeance Coefficient Calculations for Rectangular Magnets

Please select a material family and input values for L, W, and T.

Magnetic Field Permeance Coefficient Calculations for Rectangular Magnets
SI English ---Please Select--- Alnico 5 Alnico 6 Alnico 5-7 Alnico 8 Alnico 9 Ferrite SmCo 1:5 SmCo 2:17 NdFeB
in.
in.
in.

ANSWER:

is the Permeance Coefficient (Pc)

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