3. Board Design
When designing the board, keep in mind that the amount of strain which occurs will increase
ꢀ depending on the sizeand material of the board.
Relationship with amount of strain to the board thickness, length, width, etc.]
3PL
Relationshipbetweenloadandstrain
ε=
2Ewh2
ε：Strain on center of board (μst)
L：Distance between supporting points (mm)
P
Y
w
h
E
Y
P
：Board width (mm)
：Board thickness (mm)
：Elastic modulus of board (N/m2=Pa)
：Deflection (mm)
h
：Load (N)
w
L
When the load is constant, the following relationship can be established.
· As the distance between the supporting points (L) increases,the amount of strain also increases.
→Reduce the distance between the supporting points.
· As the elastic modulus (E) decreases, the amount of strain increases.
→Increase the elastic modulus.
·
As the board width (w) decreases, the amount of strain increases.
→Increase the width of the board.
As the board thickness (h) decreases, the amount of strain increases.
·
→Increase the thickness of the board.
Since the board thickness is squared, the effect on the amount of strain becomes even greater.
GRM31CB31C226ME15-01A
MURATA [ muRata ]
