Response of a Flexible Printed Circuit Board to Periodic Shock Loads Applied to its Support Contour

1992 ◽  
Vol 59 (2S) ◽  
pp. S253-S259 ◽  
Author(s):  
E. Suhir
Keyword(s):  
Steady State ◽  
Printed Circuit Board ◽  
Circuit Board ◽  
Shock Loads ◽  
Printed Circuit ◽  
Periodic Shock ◽  
Flexible Printed Circuit ◽  
Linear Vibrations ◽  
Flexible Rectangular Plate ◽  
Support Conditions

Treating a printed circuit board (PCB) as a thin flexible rectangular plate, we evaluate its dynamic response to periodic shock loads applied to the support contour. The effect of the load periodicity on the amplitudes, accelerations, and stresses is analyzed for transient and steady-state damped linear vibrations, as well as for steady-state undamped nonlinear vibrations. It is shown that the transient nonresonant linear response can exceed the steady-state response by up to two times, and that the linear approach can be misleading in the case of a nondeformable support contour and intense loading. The obtained results can be of help when evaluating the accelerations, experienced by surface mounted electronic components and devices, and the dynamic stresses in a PCB of the given type, dimensions, and support conditions.

Nonlinear Dynamic Response of a Printed Circuit Board to Shock Loads Applied to Its Support Contour

1992 ◽  
Vol 114 (4) ◽  
pp. 368-377 ◽  
Author(s):  
E. Suhir
Keyword(s):  
Dynamic Response ◽  
Nonlinear Dynamic ◽  
Printed Circuit Board ◽  
Nonlinear Effects ◽  
Circuit Board ◽  
Dynamic Stresses ◽  
Nonlinear Dynamic Response ◽  
Shock Loads ◽  
Printed Circuit ◽  
Flexible Printed Circuit

We evaluate the nonlinear dynamic response of a flexible printed circuit board (PCB) to the following two types of shock loads acting on its support contour: 1) suddenly applied constant acceleration and 2) periodic instantaneous impacts. The purpose of the analysis is to determine the maximum accelerations experienced by the electronic components and devices surface mounted on the board. We show that when the support contour is immovable (nondeformable) and the deflections are large, it is important to account for the nonlinear effects. These are due to the in-plane (“membrane”) forces in the PCB and can possibly result in substantially higher accelerations than those predicted by a linear theory. The obtained formulas are easy-to-use and enable one to evaluate the maximum displacements (amplitudes), velocities, and accelerations of the surface-mounted devices, as well as the maximum dynamic stresses in the board. These formulas can be helpful when choosing the appropriate PCB type and dimensions, and the most rational lay-out of the components on the board.

scholarly journals Flexible Printed Circuit Board as Novel Electrodes for Acoustofluidic Devices

2020 ◽  
pp. 1-6
Author(s):  
Chao Sun ◽  
Roman Mikhaylov ◽  
Yongqing Fu ◽  
Fangda Wu ◽  
Hanlin Wang ◽  
...  
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit ◽  
Flexible Printed Circuit

Optimized Positional Compensation Parameters for Exposure Machine for Flexible Printed Circuit Board

2015 ◽  
Vol 11 (6) ◽  
pp. 1366-1377 ◽  
Author(s):  
Jinn-Tsong Tsai ◽  
Chorng-Tyan Lin ◽  
Cheng-Chung Chang ◽  
Jyh-Horng Chou
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit ◽  
Flexible Printed Circuit

Hybrid Fabrication of LED Matrix Display on Multilayer Flexible Printed Circuit Board

2021 ◽  
Author(s):  
Thanh Huy Phung ◽  
Jaehyeong Jeong ◽  
Anton Nailevich Gafurov ◽  
Inyoung Kim ◽  
Sung Yong Kim ◽  
...  
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit ◽  
Flexible Printed Circuit ◽  
Led Matrix

Superconducting Multilayer High-Density Flexible Printed Circuit Board for Very High Thermal Resistance Interconnections

2018 ◽  
Vol 193 (3-4) ◽  
pp. 578-584 ◽  
Author(s):  
Xavier de la Broïse ◽  
Alain Le Coguie ◽  
Jean-Luc Sauvageot ◽  
Claude Pigot ◽  
Xavier Coppolani ◽  
...  
Keyword(s):  
Thermal Resistance ◽  
Printed Circuit Board ◽  
High Density ◽  
Circuit Board ◽  
Printed Circuit ◽  
Flexible Printed Circuit ◽  
High Thermal Resistance ◽  
Very High

scholarly journals A Diffusor/Nozzle Pump Based on a Magnetically Actuated Flexible PCB Diaphragm

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1077
Author(s):  
Marcus A. Hintermüller ◽  
Bernhard Jakoby
Keyword(s):  
Printed Circuit Board ◽  
Microfluidic Channel ◽  
Circuit Board ◽  
Fabrication Method ◽  
Flexible Membrane ◽  
Printed Circuit ◽  
Magnetically Actuated ◽  
Lorentz Forces ◽  
Out Of Plane ◽  
Flexible Printed Circuit

We present a valveless microfluidic pump utilizing an oscillating membrane made from a flexible printed circuit board. The microfluidic channel is fabricated by a 3D printing process and features diffuser/nozzle structures to obtain a directed flow; the flexible membrane is bonded to the channel. The membrane is actuated via Lorentz forces to accomplish out-of-plane motions and push the fluid through the channel. A permanent magnet provides the static magnetic field required for the actuation. The simple fabrication method can potentially be used for inexpensive mass fabrication for disposable devices.

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