boundary_condition.py
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	#!/usr/bin/env python3

	""" boundary_condition.py: User defined boundary condition example"""

	__author__ = "Nicolas Richart"
	__credits__ = [
	"Nicolas Richart <nicolas.richart@epfl.ch>",
	]
	__copyright__ = "Copyright (©) 2018-2021 EPFL (Ecole Polytechnique Fédérale" \
	" de Lausanne) Laboratory (LSMS - Laboratoire de Simulation" \
	" en Mécanique des Solides)"
	__license__ = "LGPLv3"


	import math


	class SinBoundary:

	def __init__(self, amplitude, phase):
	self.amplitude = amplitude
	self.phase = phase

	def compute(self, disp, coord, flags):
	disp[1] = - self.amplitude * math.sin(self.phase * coord[1])
	flags[1] = True