22-Mec-B9 Advanced Engineering Structures
Worked solutions to 11 past sittings (2013–2019), 87 questions. Pick a sitting, or start from a topic below.
- December 2019
- December 2018
- May 2018
- December 2017
- May 2017
- December 2016
- May 2016
- December 2014
- May 2014
- May 2013
- Undated paper
Topics across the sittings
Topics that come up in more than one sitting, taken from the headings of our worked solutions. A topic counts once per sitting.
- Shear centre (11 sittings): December 2019 Q4 · December 2018 Q4 · May 2018 Q3 · December 2017 Q5 · May 2017 Q8 · December 2016 Q4 · May 2016 Q6 · December 2014 Q1 · May 2014 Q1 · May 2013 Q4 · Undated paper Q6
- Shear flow (8 sittings): May 2018 Q6 · December 2017 Q1 · December 2016 Q8 · May 2016 Q1 · December 2014 Q1 · May 2014 Q1 · May 2013 Q8 · Undated paper Q8
- Coffin–Manson fit (5 sittings): May 2018 Q4 · May 2017 Q1 · December 2016 Q3 · May 2016 Q3 · December 2014 Q3
- Torque (5 sittings): December 2018 Q6 · May 2017 Q4 · December 2016 Q5 · December 2014 Q5 · May 2013 Q6
- Miner cumulative damage (3 sittings): December 2017 Q3 · May 2017 Q1 · May 2016 Q3
- Paris-law crack growth (3 sittings): December 2017 Q6 · May 2017 Q7 · December 2014 Q6
- Tresca (3 sittings): May 2017 Q2 · May 2014 Q4 · Undated paper Q2
- Von Mises (3 sittings): December 2017 Q2 · May 2017 Q2 · Undated paper Q2
- Coffin–Manson constants (2 sittings): December 2017 Q3 · Undated paper Q1
- Cumulative damage (2 sittings): December 2016 Q3 · May 2013 Q5
- Inspection interval (2 sittings): May 2018 Q2 · May 2017 Q7
- Panel shear flows (2 sittings): December 2019 Q4 · May 2013 Q7
- Torsion of an open I-section (2 sittings): May 2018 Q8 · December 2014 Q1
Questions by sitting
December 2019
- Question 1: Thermal restraint of three bars in series
- Question 2: Yielding of mild steel under a triaxial stress state
- Question 3: Direct stress at a point of an unsymmetrical thin-walled channel
- Question 4: Idealised box section — shear centre and panel shear flows
- Question 5: Fatigue-crack growth in an edge-cracked plate
- Question 6: Two-segment circular torsion box
- Question 7: Stresses in a curved beam under combined thrust and moment
December 2018
- Question 1: Thermal stress in a two-segment rod between rigid supports
- Question 2: Yield prediction under a three-dimensional stress state
- Question 3: Unsymmetrical bending of a thin-walled channel
- Question 4: Shear centre and shear flow in an idealised nose box
- Question 5: Torsion of a three-cell thin-walled wing box
- Question 6: Sizing a square bar under combined axial force and torque
- Question 7: Inspection interval from fatigue crack growth
- Question 8: Stresses in a unidirectional composite skin panel
May 2018
- Question 1: Thermal stresses in a restrained two-segment rod
- Question 2: Crack growth life and the inspection interval
- Question 3: Shear centre and shear flow in an idealised wing box
- Question 4: Coffin–Manson fit and Miner’s cumulative damage rule
- Question 5: Torsion of a three-cell thin-wall box
- Question 6: Shear flow and bending stresses in a closed trapezoidal beam
- Question 7: Yield prediction by the Tresca and von Mises criteria
- Question 8: Shear flow, shear centre and torsion of an open I-section
December 2017
- Question 1: Shear flow and bending stress in a trapezoidal monocoque box
- Question 2: Yielding of a three-dimensional stress state by Tresca and von Mises
- Question 3: Coffin–Manson constants and Miner cumulative damage
- Question 4: Factors of safety of a tubular compression strut
- Question 5: Shear centre and panel shear flows of a six-boom idealised box
- Question 6: Paris-law crack growth and the required inspection interval
- Question 7: Torsion of a three-cell thin-walled box
- Question 8: Shear centre and shear flow of a box with a semi-elliptical leading edge
May 2017
- Question 1: Coffin–Manson fit and Miner cumulative damage
- Question 2: Yielding of a three-dimensional stress state: Tresca vs von Mises
- Question 3: Orthotropic lamina stiffness and its transformation
- Question 4: Design of a square bar under combined axial load and torque
- Question 5: Unsymmetrical bending of a thin-walled channel
- Question 6: Three-cell thin-walled box in pure torsion
- Question 7: Paris-law crack growth and the inspection interval
- Question 8: Shear centre and shear flow in an idealised wing box with a semicircular nose
December 2016
- Question 1: Shear flow in a two-cell torsion box with a semicircular nose
- Question 2: Stiffness matrices of an orthotropic lamina
- Question 3: Coffin–Manson fit and cumulative damage
- Question 4: Shear centre and panel flows of an idealised six-boom wing box
- Question 5: Sizing a square bar under combined axial force and torque
- Question 6: Unsymmetrical bending of a thin-walled channel
- Question 7: Three-cell wing box in pure torsion
- Question 8: Shear flow, shear centre and warping torque in an open I-section
May 2016
- Question 1: Shear flow and bending stresses in a closed trapezoidal box
- Question 2: Yielding of a ductile solid under a three-dimensional stress state
- Question 3: Coffin–Manson fit and Miner cumulative damage
- Question 4: Factor of safety against elastic buckling of a strut
- Question 5: Paris-law inspection interval for an edge crack
- Question 6: Shear centre and panel flows of a six-boom idealised wing box
- Question 7: Torsion of a three-cell thin-walled wing box
- Question 8: Shear centre and shear flow of a four-boom box with a semi-elliptical nose
December 2014
- Question 1: Shear flow, shear centre and torsion of an open I-section
- Question 2: Maximum bending and shear stresses in a cantilever channel
- Question 3: Coffin–Manson fit and cumulative fatigue damage
- Question 4: Thermal stress in a restrained two-material bar
- Question 5: Sizing a square bar under combined compression and torque
- Question 6: Paris-law crack growth and the resulting inspection interval
- Question 7: Shear centre and panel shear flows of an idealised wing box
- Question 8: Torsion of a three-cell thin-walled wing box
May 2014
- Question 1: Shear flow, shear centre and torsional overload of an open thin-walled section
- Question 2: Damage-tolerant inspection interval for an edge-cracked skin panel
- Question 3: Coffin-Manson constants from strain cycling data and cumulative damage life
- Question 4: Tresca and von Mises predictions for a triaxial stress state
- Question 5: Shear flow and peak shear stress in a two-cell torsion box
- Question 6: Shear centre and panel shear flows of an idealised six-boom wing box
- Question 7: Thermal stress and joint movement in a doubly built-in two-rod assembly
- Question 8: Shear centre and wall shear flows of a four-boom box with an elliptical leading edge
May 2013
- Question 1: Damage-tolerant inspection interval for an edge-cracked panel
- Question 2: Factor of safety against elastic buckling of the strut BC
- Question 3: Bending stress in an unsymmetrical thin-walled channel
- Question 4: Shear centre and shear flow of an idealised wing box
- Question 5: Low-cycle fatigue: strain-life fit and cumulative damage
- Question 6: Minimum square section under combined axial load and torque
- Question 7: Panel shear flows and stringer loads in a cantilever wing box
- Question 8: Shear flow and corner bending stresses in a closed trapezoidal box
Undated paper
- Question 1: Coffin–Manson constants and Miner’s cumulative damage
- Question 2: Yielding of a three-dimensional stress state: Tresca and von Mises
- Question 3: Sizing a square cantilever under combined compression and torsion
- Question 4: Three-cell wing box in pure torsion
- Question 5: Crack growth and the maintenance interval for a cracked wing skin
- Question 6: Shear centre and shear flow of an idealised wing box with a semicircular nose
- Question 7: Orthotropic lamina: reduced stiffness, ply transformation and stresses
- Question 8: Two-cell wing torsion box: shear flows and maximum shear stress