From d15274fa28cb19dedf4eaf7f0b85546ee049d9a3 Mon Sep 17 00:00:00 2001
From: Daniel Weschke <daniel.weschke@gmail.com>
Date: Wed, 23 Apr 2014 01:19:12 +0200
Subject: [PATCH] correct stiffness matrix of 1d 3dof bar element

---
 .gitconfig     | 4 ++++
 src/fem/K.java | 4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/.gitconfig b/.gitconfig
index 8e7c327..8f651cc 100644
--- a/.gitconfig
+++ b/.gitconfig
@@ -6,6 +6,10 @@
 	br = branch
 	ci = commit
 	mylog = log --pretty=format:'%h %s [%an]' --graph
+  lg1 = log --graph --abbrev-commit --decorate --date=relative --format=format:'%C(bold blue)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)' --all
+  lg2 = log --graph --abbrev-commit --decorate --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset)%n''          %C(white)%s%C(reset) %C(dim white)- %an%C(reset)' --all
+  lg = !"git lg1"
+  changes = show --stat --oneline
 	pushall = push --recurse-submodules=on-demand
 [core]
 	quotepath = off
diff --git a/src/fem/K.java b/src/fem/K.java
index ca05599..17feec7 100644
--- a/src/fem/K.java
+++ b/src/fem/K.java
@@ -34,8 +34,8 @@ public class K extends Matrix{
 	 */
 	public static Matrix bar3(double L, double ki){
 		return new Matrix(new double[][]{
-				{ 7, 56,  1},
-				{56, 16, -8},
+				{ 7, -8,  1},
+				{-8, 16, -8},
 				{ 1, -8,  7}}).times(ki/(3*L));
 	}